net/sched: act_ife: Change to use ife module
Use the encode/decode functionality from the ife module instead of using implementation inside the act_ife. Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Roman Mashak <mrv@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
1ce8460496
commit
295a6e06d2
|
@ -6,7 +6,6 @@
|
||||||
#include <linux/rtnetlink.h>
|
#include <linux/rtnetlink.h>
|
||||||
#include <linux/module.h>
|
#include <linux/module.h>
|
||||||
|
|
||||||
#define IFE_METAHDRLEN 2
|
|
||||||
struct tcf_ife_info {
|
struct tcf_ife_info {
|
||||||
struct tc_action common;
|
struct tc_action common;
|
||||||
u8 eth_dst[ETH_ALEN];
|
u8 eth_dst[ETH_ALEN];
|
||||||
|
|
|
@ -3,6 +3,7 @@
|
||||||
|
|
||||||
#include <linux/types.h>
|
#include <linux/types.h>
|
||||||
#include <linux/pkt_cls.h>
|
#include <linux/pkt_cls.h>
|
||||||
|
#include <linux/ife.h>
|
||||||
|
|
||||||
#define TCA_ACT_IFE 25
|
#define TCA_ACT_IFE 25
|
||||||
/* Flag bits for now just encoding/decoding; mutually exclusive */
|
/* Flag bits for now just encoding/decoding; mutually exclusive */
|
||||||
|
@ -28,13 +29,4 @@ enum {
|
||||||
};
|
};
|
||||||
#define TCA_IFE_MAX (__TCA_IFE_MAX - 1)
|
#define TCA_IFE_MAX (__TCA_IFE_MAX - 1)
|
||||||
|
|
||||||
#define IFE_META_SKBMARK 1
|
|
||||||
#define IFE_META_HASHID 2
|
|
||||||
#define IFE_META_PRIO 3
|
|
||||||
#define IFE_META_QMAP 4
|
|
||||||
#define IFE_META_TCINDEX 5
|
|
||||||
/*Can be overridden at runtime by module option*/
|
|
||||||
#define __IFE_META_MAX 6
|
|
||||||
#define IFE_META_MAX (__IFE_META_MAX - 1)
|
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|
|
@ -776,6 +776,7 @@ config NET_ACT_SKBMOD
|
||||||
config NET_ACT_IFE
|
config NET_ACT_IFE
|
||||||
tristate "Inter-FE action based on IETF ForCES InterFE LFB"
|
tristate "Inter-FE action based on IETF ForCES InterFE LFB"
|
||||||
depends on NET_CLS_ACT
|
depends on NET_CLS_ACT
|
||||||
|
select NET_IFE
|
||||||
---help---
|
---help---
|
||||||
Say Y here to allow for sourcing and terminating metadata
|
Say Y here to allow for sourcing and terminating metadata
|
||||||
For details refer to netdev01 paper:
|
For details refer to netdev01 paper:
|
||||||
|
|
|
@ -32,6 +32,7 @@
|
||||||
#include <uapi/linux/tc_act/tc_ife.h>
|
#include <uapi/linux/tc_act/tc_ife.h>
|
||||||
#include <net/tc_act/tc_ife.h>
|
#include <net/tc_act/tc_ife.h>
|
||||||
#include <linux/etherdevice.h>
|
#include <linux/etherdevice.h>
|
||||||
|
#include <net/ife.h>
|
||||||
|
|
||||||
#define IFE_TAB_MASK 15
|
#define IFE_TAB_MASK 15
|
||||||
|
|
||||||
|
@ -46,23 +47,6 @@ static const struct nla_policy ife_policy[TCA_IFE_MAX + 1] = {
|
||||||
[TCA_IFE_TYPE] = { .type = NLA_U16},
|
[TCA_IFE_TYPE] = { .type = NLA_U16},
|
||||||
};
|
};
|
||||||
|
|
||||||
/* Caller takes care of presenting data in network order
|
|
||||||
*/
|
|
||||||
static int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen,
|
|
||||||
const void *dval)
|
|
||||||
{
|
|
||||||
u32 *tlv = (u32 *)(skbdata);
|
|
||||||
u16 totlen = nla_total_size(dlen); /*alignment + hdr */
|
|
||||||
char *dptr = (char *)tlv + NLA_HDRLEN;
|
|
||||||
u32 htlv = attrtype << 16 | (dlen + NLA_HDRLEN);
|
|
||||||
|
|
||||||
*tlv = htonl(htlv);
|
|
||||||
memset(dptr, 0, totlen - NLA_HDRLEN);
|
|
||||||
memcpy(dptr, dval, dlen);
|
|
||||||
|
|
||||||
return totlen;
|
|
||||||
}
|
|
||||||
|
|
||||||
int ife_encode_meta_u16(u16 metaval, void *skbdata, struct tcf_meta_info *mi)
|
int ife_encode_meta_u16(u16 metaval, void *skbdata, struct tcf_meta_info *mi)
|
||||||
{
|
{
|
||||||
u16 edata = 0;
|
u16 edata = 0;
|
||||||
|
@ -637,69 +621,59 @@ int find_decode_metaid(struct sk_buff *skb, struct tcf_ife_info *ife,
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
struct ifeheadr {
|
|
||||||
__be16 metalen;
|
|
||||||
u8 tlv_data[];
|
|
||||||
};
|
|
||||||
|
|
||||||
struct meta_tlvhdr {
|
|
||||||
__be16 type;
|
|
||||||
__be16 len;
|
|
||||||
};
|
|
||||||
|
|
||||||
static int tcf_ife_decode(struct sk_buff *skb, const struct tc_action *a,
|
static int tcf_ife_decode(struct sk_buff *skb, const struct tc_action *a,
|
||||||
struct tcf_result *res)
|
struct tcf_result *res)
|
||||||
{
|
{
|
||||||
struct tcf_ife_info *ife = to_ife(a);
|
struct tcf_ife_info *ife = to_ife(a);
|
||||||
int action = ife->tcf_action;
|
int action = ife->tcf_action;
|
||||||
struct ifeheadr *ifehdr = (struct ifeheadr *)skb->data;
|
u8 *ifehdr_end;
|
||||||
int ifehdrln = (int)ifehdr->metalen;
|
u8 *tlv_data;
|
||||||
struct meta_tlvhdr *tlv = (struct meta_tlvhdr *)(ifehdr->tlv_data);
|
u16 metalen;
|
||||||
|
|
||||||
spin_lock(&ife->tcf_lock);
|
spin_lock(&ife->tcf_lock);
|
||||||
bstats_update(&ife->tcf_bstats, skb);
|
bstats_update(&ife->tcf_bstats, skb);
|
||||||
tcf_lastuse_update(&ife->tcf_tm);
|
tcf_lastuse_update(&ife->tcf_tm);
|
||||||
spin_unlock(&ife->tcf_lock);
|
spin_unlock(&ife->tcf_lock);
|
||||||
|
|
||||||
ifehdrln = ntohs(ifehdrln);
|
if (skb_at_tc_ingress(skb))
|
||||||
if (unlikely(!pskb_may_pull(skb, ifehdrln))) {
|
skb_push(skb, skb->dev->hard_header_len);
|
||||||
|
|
||||||
|
tlv_data = ife_decode(skb, &metalen);
|
||||||
|
if (unlikely(!tlv_data)) {
|
||||||
spin_lock(&ife->tcf_lock);
|
spin_lock(&ife->tcf_lock);
|
||||||
ife->tcf_qstats.drops++;
|
ife->tcf_qstats.drops++;
|
||||||
spin_unlock(&ife->tcf_lock);
|
spin_unlock(&ife->tcf_lock);
|
||||||
return TC_ACT_SHOT;
|
return TC_ACT_SHOT;
|
||||||
}
|
}
|
||||||
|
|
||||||
skb_set_mac_header(skb, ifehdrln);
|
ifehdr_end = tlv_data + metalen;
|
||||||
__skb_pull(skb, ifehdrln);
|
for (; tlv_data < ifehdr_end; tlv_data = ife_tlv_meta_next(tlv_data)) {
|
||||||
skb->protocol = eth_type_trans(skb, skb->dev);
|
u8 *curr_data;
|
||||||
ifehdrln -= IFE_METAHDRLEN;
|
u16 mtype;
|
||||||
|
u16 dlen;
|
||||||
|
|
||||||
while (ifehdrln > 0) {
|
curr_data = ife_tlv_meta_decode(tlv_data, &mtype, &dlen, NULL);
|
||||||
u8 *tlvdata = (u8 *)tlv;
|
|
||||||
u16 mtype = tlv->type;
|
|
||||||
u16 mlen = tlv->len;
|
|
||||||
u16 alen;
|
|
||||||
|
|
||||||
mtype = ntohs(mtype);
|
if (find_decode_metaid(skb, ife, mtype, dlen, curr_data)) {
|
||||||
mlen = ntohs(mlen);
|
|
||||||
alen = NLA_ALIGN(mlen);
|
|
||||||
|
|
||||||
if (find_decode_metaid(skb, ife, mtype, (mlen - NLA_HDRLEN),
|
|
||||||
(void *)(tlvdata + NLA_HDRLEN))) {
|
|
||||||
/* abuse overlimits to count when we receive metadata
|
/* abuse overlimits to count when we receive metadata
|
||||||
* but dont have an ops for it
|
* but dont have an ops for it
|
||||||
*/
|
*/
|
||||||
pr_info_ratelimited("Unknown metaid %d alnlen %d\n",
|
pr_info_ratelimited("Unknown metaid %d dlen %d\n",
|
||||||
mtype, mlen);
|
mtype, dlen);
|
||||||
ife->tcf_qstats.overlimits++;
|
ife->tcf_qstats.overlimits++;
|
||||||
}
|
}
|
||||||
|
|
||||||
tlvdata += alen;
|
|
||||||
ifehdrln -= alen;
|
|
||||||
tlv = (struct meta_tlvhdr *)tlvdata;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
|
if (WARN_ON(tlv_data != ifehdr_end)) {
|
||||||
|
spin_lock(&ife->tcf_lock);
|
||||||
|
ife->tcf_qstats.drops++;
|
||||||
|
spin_unlock(&ife->tcf_lock);
|
||||||
|
return TC_ACT_SHOT;
|
||||||
|
}
|
||||||
|
|
||||||
|
skb->protocol = eth_type_trans(skb, skb->dev);
|
||||||
skb_reset_network_header(skb);
|
skb_reset_network_header(skb);
|
||||||
|
|
||||||
return action;
|
return action;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -727,7 +701,6 @@ static int tcf_ife_encode(struct sk_buff *skb, const struct tc_action *a,
|
||||||
struct tcf_ife_info *ife = to_ife(a);
|
struct tcf_ife_info *ife = to_ife(a);
|
||||||
int action = ife->tcf_action;
|
int action = ife->tcf_action;
|
||||||
struct ethhdr *oethh; /* outer ether header */
|
struct ethhdr *oethh; /* outer ether header */
|
||||||
struct ethhdr *iethh; /* inner eth header */
|
|
||||||
struct tcf_meta_info *e;
|
struct tcf_meta_info *e;
|
||||||
/*
|
/*
|
||||||
OUTERHDR:TOTMETALEN:{TLVHDR:Metadatum:TLVHDR..}:ORIGDATA
|
OUTERHDR:TOTMETALEN:{TLVHDR:Metadatum:TLVHDR..}:ORIGDATA
|
||||||
|
@ -735,10 +708,11 @@ static int tcf_ife_encode(struct sk_buff *skb, const struct tc_action *a,
|
||||||
*/
|
*/
|
||||||
u16 metalen = ife_get_sz(skb, ife);
|
u16 metalen = ife_get_sz(skb, ife);
|
||||||
int hdrm = metalen + skb->dev->hard_header_len + IFE_METAHDRLEN;
|
int hdrm = metalen + skb->dev->hard_header_len + IFE_METAHDRLEN;
|
||||||
unsigned int skboff = skb->dev->hard_header_len;
|
unsigned int skboff = 0;
|
||||||
int new_len = skb->len + hdrm;
|
int new_len = skb->len + hdrm;
|
||||||
bool exceed_mtu = false;
|
bool exceed_mtu = false;
|
||||||
int err;
|
void *ife_meta;
|
||||||
|
int err = 0;
|
||||||
|
|
||||||
if (!skb_at_tc_ingress(skb)) {
|
if (!skb_at_tc_ingress(skb)) {
|
||||||
if (new_len > skb->dev->mtu)
|
if (new_len > skb->dev->mtu)
|
||||||
|
@ -765,27 +739,10 @@ static int tcf_ife_encode(struct sk_buff *skb, const struct tc_action *a,
|
||||||
return TC_ACT_SHOT;
|
return TC_ACT_SHOT;
|
||||||
}
|
}
|
||||||
|
|
||||||
err = skb_cow_head(skb, hdrm);
|
|
||||||
if (unlikely(err)) {
|
|
||||||
ife->tcf_qstats.drops++;
|
|
||||||
spin_unlock(&ife->tcf_lock);
|
|
||||||
return TC_ACT_SHOT;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (skb_at_tc_ingress(skb))
|
if (skb_at_tc_ingress(skb))
|
||||||
skb_push(skb, skb->dev->hard_header_len);
|
skb_push(skb, skb->dev->hard_header_len);
|
||||||
|
|
||||||
iethh = (struct ethhdr *)skb->data;
|
ife_meta = ife_encode(skb, metalen);
|
||||||
__skb_push(skb, hdrm);
|
|
||||||
memcpy(skb->data, iethh, skb->mac_len);
|
|
||||||
skb_reset_mac_header(skb);
|
|
||||||
oethh = eth_hdr(skb);
|
|
||||||
|
|
||||||
/*total metadata length */
|
|
||||||
metalen += IFE_METAHDRLEN;
|
|
||||||
metalen = htons(metalen);
|
|
||||||
memcpy((skb->data + skboff), &metalen, IFE_METAHDRLEN);
|
|
||||||
skboff += IFE_METAHDRLEN;
|
|
||||||
|
|
||||||
/* XXX: we dont have a clever way of telling encode to
|
/* XXX: we dont have a clever way of telling encode to
|
||||||
* not repeat some of the computations that are done by
|
* not repeat some of the computations that are done by
|
||||||
|
@ -793,7 +750,7 @@ static int tcf_ife_encode(struct sk_buff *skb, const struct tc_action *a,
|
||||||
*/
|
*/
|
||||||
list_for_each_entry(e, &ife->metalist, metalist) {
|
list_for_each_entry(e, &ife->metalist, metalist) {
|
||||||
if (e->ops->encode) {
|
if (e->ops->encode) {
|
||||||
err = e->ops->encode(skb, (void *)(skb->data + skboff),
|
err = e->ops->encode(skb, (void *)(ife_meta + skboff),
|
||||||
e);
|
e);
|
||||||
}
|
}
|
||||||
if (err < 0) {
|
if (err < 0) {
|
||||||
|
@ -804,15 +761,12 @@ static int tcf_ife_encode(struct sk_buff *skb, const struct tc_action *a,
|
||||||
}
|
}
|
||||||
skboff += err;
|
skboff += err;
|
||||||
}
|
}
|
||||||
|
oethh = (struct ethhdr *)skb->data;
|
||||||
|
|
||||||
if (!is_zero_ether_addr(ife->eth_src))
|
if (!is_zero_ether_addr(ife->eth_src))
|
||||||
ether_addr_copy(oethh->h_source, ife->eth_src);
|
ether_addr_copy(oethh->h_source, ife->eth_src);
|
||||||
else
|
|
||||||
ether_addr_copy(oethh->h_source, iethh->h_source);
|
|
||||||
if (!is_zero_ether_addr(ife->eth_dst))
|
if (!is_zero_ether_addr(ife->eth_dst))
|
||||||
ether_addr_copy(oethh->h_dest, ife->eth_dst);
|
ether_addr_copy(oethh->h_dest, ife->eth_dst);
|
||||||
else
|
|
||||||
ether_addr_copy(oethh->h_dest, iethh->h_dest);
|
|
||||||
oethh->h_proto = htons(ife->eth_type);
|
oethh->h_proto = htons(ife->eth_type);
|
||||||
|
|
||||||
if (skb_at_tc_ingress(skb))
|
if (skb_at_tc_ingress(skb))
|
||||||
|
|
Loading…
Reference in New Issue