flow_dissector: Use 'const' where possible.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
de4c1f8ba3
commit
20a17bf6c0
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@ -1029,9 +1029,9 @@ static inline __u32 skb_get_hash(struct sk_buff *skb)
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return skb->hash;
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return skb->hash;
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}
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}
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__u32 __skb_get_hash_flowi6(struct sk_buff *skb, struct flowi6 *fl6);
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__u32 __skb_get_hash_flowi6(struct sk_buff *skb, const struct flowi6 *fl6);
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static inline __u32 skb_get_hash_flowi6(struct sk_buff *skb, struct flowi6 *fl6)
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static inline __u32 skb_get_hash_flowi6(struct sk_buff *skb, const struct flowi6 *fl6)
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{
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{
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if (!skb->l4_hash && !skb->sw_hash) {
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if (!skb->l4_hash && !skb->sw_hash) {
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struct flow_keys keys;
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struct flow_keys keys;
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@ -1043,9 +1043,9 @@ static inline __u32 skb_get_hash_flowi6(struct sk_buff *skb, struct flowi6 *fl6)
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return skb->hash;
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return skb->hash;
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}
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}
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__u32 __skb_get_hash_flowi4(struct sk_buff *skb, struct flowi4 *fl);
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__u32 __skb_get_hash_flowi4(struct sk_buff *skb, const struct flowi4 *fl);
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static inline __u32 skb_get_hash_flowi4(struct sk_buff *skb, struct flowi4 *fl4)
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static inline __u32 skb_get_hash_flowi4(struct sk_buff *skb, const struct flowi4 *fl4)
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{
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{
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if (!skb->l4_hash && !skb->sw_hash) {
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if (!skb->l4_hash && !skb->sw_hash) {
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struct flow_keys keys;
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struct flow_keys keys;
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@ -244,18 +244,18 @@ void flow_cache_flush(struct net *net);
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void flow_cache_flush_deferred(struct net *net);
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void flow_cache_flush_deferred(struct net *net);
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extern atomic_t flow_cache_genid;
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extern atomic_t flow_cache_genid;
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__u32 __get_hash_from_flowi6(struct flowi6 *fl6, struct flow_keys *keys);
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__u32 __get_hash_from_flowi6(const struct flowi6 *fl6, struct flow_keys *keys);
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static inline __u32 get_hash_from_flowi6(struct flowi6 *fl6)
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static inline __u32 get_hash_from_flowi6(const struct flowi6 *fl6)
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{
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{
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struct flow_keys keys;
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struct flow_keys keys;
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return __get_hash_from_flowi6(fl6, &keys);
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return __get_hash_from_flowi6(fl6, &keys);
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}
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}
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__u32 __get_hash_from_flowi4(struct flowi4 *fl4, struct flow_keys *keys);
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__u32 __get_hash_from_flowi4(const struct flowi4 *fl4, struct flow_keys *keys);
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static inline __u32 get_hash_from_flowi4(struct flowi4 *fl4)
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static inline __u32 get_hash_from_flowi4(const struct flowi4 *fl4)
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{
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{
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struct flow_keys keys;
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struct flow_keys keys;
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@ -19,14 +19,14 @@
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#include <net/flow_dissector.h>
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#include <net/flow_dissector.h>
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#include <scsi/fc/fc_fcoe.h>
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#include <scsi/fc/fc_fcoe.h>
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static bool skb_flow_dissector_uses_key(struct flow_dissector *flow_dissector,
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static bool dissector_uses_key(const struct flow_dissector *flow_dissector,
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enum flow_dissector_key_id key_id)
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enum flow_dissector_key_id key_id)
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{
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{
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return flow_dissector->used_keys & (1 << key_id);
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return flow_dissector->used_keys & (1 << key_id);
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}
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}
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static void skb_flow_dissector_set_key(struct flow_dissector *flow_dissector,
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static void dissector_set_key(struct flow_dissector *flow_dissector,
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enum flow_dissector_key_id key_id)
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enum flow_dissector_key_id key_id)
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{
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{
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flow_dissector->used_keys |= (1 << key_id);
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flow_dissector->used_keys |= (1 << key_id);
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}
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}
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@ -51,20 +51,20 @@ void skb_flow_dissector_init(struct flow_dissector *flow_dissector,
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* boundaries of unsigned short.
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* boundaries of unsigned short.
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*/
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*/
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BUG_ON(key->offset > USHRT_MAX);
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BUG_ON(key->offset > USHRT_MAX);
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BUG_ON(skb_flow_dissector_uses_key(flow_dissector,
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BUG_ON(dissector_uses_key(flow_dissector,
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key->key_id));
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key->key_id));
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skb_flow_dissector_set_key(flow_dissector, key->key_id);
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dissector_set_key(flow_dissector, key->key_id);
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flow_dissector->offset[key->key_id] = key->offset;
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flow_dissector->offset[key->key_id] = key->offset;
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}
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}
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/* Ensure that the dissector always includes control and basic key.
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/* Ensure that the dissector always includes control and basic key.
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* That way we are able to avoid handling lack of these in fast path.
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* That way we are able to avoid handling lack of these in fast path.
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*/
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*/
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BUG_ON(!skb_flow_dissector_uses_key(flow_dissector,
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BUG_ON(!dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_CONTROL));
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FLOW_DISSECTOR_KEY_CONTROL));
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BUG_ON(!skb_flow_dissector_uses_key(flow_dissector,
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BUG_ON(!dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_BASIC));
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FLOW_DISSECTOR_KEY_BASIC));
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}
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}
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EXPORT_SYMBOL(skb_flow_dissector_init);
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EXPORT_SYMBOL(skb_flow_dissector_init);
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@ -154,8 +154,8 @@ bool __skb_flow_dissect(const struct sk_buff *skb,
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FLOW_DISSECTOR_KEY_BASIC,
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FLOW_DISSECTOR_KEY_BASIC,
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target_container);
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target_container);
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if (skb_flow_dissector_uses_key(flow_dissector,
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if (dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
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FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
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struct ethhdr *eth = eth_hdr(skb);
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struct ethhdr *eth = eth_hdr(skb);
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struct flow_dissector_key_eth_addrs *key_eth_addrs;
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struct flow_dissector_key_eth_addrs *key_eth_addrs;
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@ -178,8 +178,8 @@ ip:
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ip_proto = iph->protocol;
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ip_proto = iph->protocol;
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if (!skb_flow_dissector_uses_key(flow_dissector,
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if (!dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_IPV4_ADDRS))
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FLOW_DISSECTOR_KEY_IPV4_ADDRS))
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break;
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break;
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key_addrs = skb_flow_dissector_target(flow_dissector,
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key_addrs = skb_flow_dissector_target(flow_dissector,
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@ -218,8 +218,8 @@ ipv6:
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ip_proto = iph->nexthdr;
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ip_proto = iph->nexthdr;
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nhoff += sizeof(struct ipv6hdr);
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nhoff += sizeof(struct ipv6hdr);
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if (skb_flow_dissector_uses_key(flow_dissector,
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if (dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_IPV6_ADDRS)) {
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FLOW_DISSECTOR_KEY_IPV6_ADDRS)) {
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struct flow_dissector_key_ipv6_addrs *key_ipv6_addrs;
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struct flow_dissector_key_ipv6_addrs *key_ipv6_addrs;
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key_ipv6_addrs = skb_flow_dissector_target(flow_dissector,
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key_ipv6_addrs = skb_flow_dissector_target(flow_dissector,
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@ -232,8 +232,8 @@ ipv6:
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flow_label = ip6_flowlabel(iph);
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flow_label = ip6_flowlabel(iph);
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if (flow_label) {
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if (flow_label) {
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if (skb_flow_dissector_uses_key(flow_dissector,
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if (dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_FLOW_LABEL)) {
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FLOW_DISSECTOR_KEY_FLOW_LABEL)) {
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key_tags = skb_flow_dissector_target(flow_dissector,
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key_tags = skb_flow_dissector_target(flow_dissector,
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FLOW_DISSECTOR_KEY_FLOW_LABEL,
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FLOW_DISSECTOR_KEY_FLOW_LABEL,
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target_container);
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target_container);
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@ -257,8 +257,8 @@ ipv6:
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if (!vlan)
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if (!vlan)
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goto out_bad;
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goto out_bad;
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if (skb_flow_dissector_uses_key(flow_dissector,
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if (dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_VLANID)) {
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FLOW_DISSECTOR_KEY_VLANID)) {
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key_tags = skb_flow_dissector_target(flow_dissector,
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key_tags = skb_flow_dissector_target(flow_dissector,
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FLOW_DISSECTOR_KEY_VLANID,
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FLOW_DISSECTOR_KEY_VLANID,
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target_container);
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target_container);
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@ -298,8 +298,8 @@ ipv6:
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if (!hdr)
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if (!hdr)
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goto out_bad;
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goto out_bad;
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if (skb_flow_dissector_uses_key(flow_dissector,
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if (dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_TIPC_ADDRS)) {
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FLOW_DISSECTOR_KEY_TIPC_ADDRS)) {
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key_addrs = skb_flow_dissector_target(flow_dissector,
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key_addrs = skb_flow_dissector_target(flow_dissector,
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FLOW_DISSECTOR_KEY_TIPC_ADDRS,
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FLOW_DISSECTOR_KEY_TIPC_ADDRS,
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target_container);
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target_container);
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@ -320,8 +320,8 @@ mpls:
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if ((ntohl(hdr[0].entry) & MPLS_LS_LABEL_MASK) >>
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if ((ntohl(hdr[0].entry) & MPLS_LS_LABEL_MASK) >>
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MPLS_LS_LABEL_SHIFT == MPLS_LABEL_ENTROPY) {
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MPLS_LS_LABEL_SHIFT == MPLS_LABEL_ENTROPY) {
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if (skb_flow_dissector_uses_key(flow_dissector,
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if (dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_MPLS_ENTROPY)) {
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FLOW_DISSECTOR_KEY_MPLS_ENTROPY)) {
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key_keyid = skb_flow_dissector_target(flow_dissector,
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key_keyid = skb_flow_dissector_target(flow_dissector,
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FLOW_DISSECTOR_KEY_MPLS_ENTROPY,
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FLOW_DISSECTOR_KEY_MPLS_ENTROPY,
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target_container);
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target_container);
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@ -374,8 +374,8 @@ ip_proto_again:
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if (!keyid)
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if (!keyid)
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goto out_bad;
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goto out_bad;
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if (skb_flow_dissector_uses_key(flow_dissector,
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if (dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_GRE_KEYID)) {
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FLOW_DISSECTOR_KEY_GRE_KEYID)) {
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key_keyid = skb_flow_dissector_target(flow_dissector,
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key_keyid = skb_flow_dissector_target(flow_dissector,
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FLOW_DISSECTOR_KEY_GRE_KEYID,
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FLOW_DISSECTOR_KEY_GRE_KEYID,
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target_container);
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target_container);
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@ -470,8 +470,8 @@ ip_proto_again:
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break;
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break;
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}
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}
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if (skb_flow_dissector_uses_key(flow_dissector,
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if (dissector_uses_key(flow_dissector,
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FLOW_DISSECTOR_KEY_PORTS)) {
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FLOW_DISSECTOR_KEY_PORTS)) {
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key_ports = skb_flow_dissector_target(flow_dissector,
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key_ports = skb_flow_dissector_target(flow_dissector,
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FLOW_DISSECTOR_KEY_PORTS,
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FLOW_DISSECTOR_KEY_PORTS,
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target_container);
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target_container);
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@ -497,18 +497,21 @@ static __always_inline void __flow_hash_secret_init(void)
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net_get_random_once(&hashrnd, sizeof(hashrnd));
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net_get_random_once(&hashrnd, sizeof(hashrnd));
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}
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}
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static __always_inline u32 __flow_hash_words(u32 *words, u32 length, u32 keyval)
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static __always_inline u32 __flow_hash_words(const u32 *words, u32 length,
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u32 keyval)
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{
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{
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return jhash2(words, length, keyval);
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return jhash2(words, length, keyval);
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}
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}
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static inline void *flow_keys_hash_start(struct flow_keys *flow)
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static inline const u32 *flow_keys_hash_start(const struct flow_keys *flow)
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{
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{
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const void *p = flow;
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BUILD_BUG_ON(FLOW_KEYS_HASH_OFFSET % sizeof(u32));
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BUILD_BUG_ON(FLOW_KEYS_HASH_OFFSET % sizeof(u32));
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return (void *)flow + FLOW_KEYS_HASH_OFFSET;
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return (const u32 *)(p + FLOW_KEYS_HASH_OFFSET);
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}
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}
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static inline size_t flow_keys_hash_length(struct flow_keys *flow)
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static inline size_t flow_keys_hash_length(const struct flow_keys *flow)
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{
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{
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size_t diff = FLOW_KEYS_HASH_OFFSET + sizeof(flow->addrs);
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size_t diff = FLOW_KEYS_HASH_OFFSET + sizeof(flow->addrs);
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BUILD_BUG_ON((sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32));
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BUILD_BUG_ON((sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32));
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@ -598,7 +601,7 @@ static inline u32 __flow_hash_from_keys(struct flow_keys *keys, u32 keyval)
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__flow_hash_consistentify(keys);
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__flow_hash_consistentify(keys);
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hash = __flow_hash_words((u32 *)flow_keys_hash_start(keys),
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hash = __flow_hash_words(flow_keys_hash_start(keys),
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flow_keys_hash_length(keys), keyval);
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flow_keys_hash_length(keys), keyval);
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if (!hash)
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if (!hash)
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hash = 1;
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hash = 1;
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@ -677,7 +680,7 @@ __u32 skb_get_hash_perturb(const struct sk_buff *skb, u32 perturb)
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}
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}
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EXPORT_SYMBOL(skb_get_hash_perturb);
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EXPORT_SYMBOL(skb_get_hash_perturb);
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__u32 __skb_get_hash_flowi6(struct sk_buff *skb, struct flowi6 *fl6)
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__u32 __skb_get_hash_flowi6(struct sk_buff *skb, const struct flowi6 *fl6)
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{
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{
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struct flow_keys keys;
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struct flow_keys keys;
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@ -701,7 +704,7 @@ __u32 __skb_get_hash_flowi6(struct sk_buff *skb, struct flowi6 *fl6)
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}
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}
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EXPORT_SYMBOL(__skb_get_hash_flowi6);
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EXPORT_SYMBOL(__skb_get_hash_flowi6);
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__u32 __skb_get_hash_flowi4(struct sk_buff *skb, struct flowi4 *fl4)
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__u32 __skb_get_hash_flowi4(struct sk_buff *skb, const struct flowi4 *fl4)
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{
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{
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struct flow_keys keys;
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struct flow_keys keys;
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@ -787,7 +790,7 @@ u32 skb_get_poff(const struct sk_buff *skb)
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return __skb_get_poff(skb, skb->data, &keys, skb_headlen(skb));
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return __skb_get_poff(skb, skb->data, &keys, skb_headlen(skb));
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}
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}
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__u32 __get_hash_from_flowi6(struct flowi6 *fl6, struct flow_keys *keys)
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__u32 __get_hash_from_flowi6(const struct flowi6 *fl6, struct flow_keys *keys)
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{
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{
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memset(keys, 0, sizeof(*keys));
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memset(keys, 0, sizeof(*keys));
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@ -806,7 +809,7 @@ __u32 __get_hash_from_flowi6(struct flowi6 *fl6, struct flow_keys *keys)
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}
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}
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EXPORT_SYMBOL(__get_hash_from_flowi6);
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EXPORT_SYMBOL(__get_hash_from_flowi6);
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__u32 __get_hash_from_flowi4(struct flowi4 *fl4, struct flow_keys *keys)
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__u32 __get_hash_from_flowi4(const struct flowi4 *fl4, struct flow_keys *keys)
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{
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{
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memset(keys, 0, sizeof(*keys));
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memset(keys, 0, sizeof(*keys));
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