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RDMA/nes: MPA request/response error checking 

During Xansation testing, we saw that error handling of MPA frame
msg/response is not handled properly.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Faisal Latif 2009-12-09 15:53:54 -08:00 committed by Roland Dreier
parent 8ac7f6e1af
commit 1cf078c995
1 changed files with 29 additions and 2 deletions
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31
drivers/infiniband/hw/nes/nes_cm.c
View File

@ -251,6 +251,33 @@ static int parse_mpa(struct nes_cm_node *cm_node, u8 *buffer, u32 *type,
mpa_frame = (struct ietf_mpa_frame *)buffer;
cm_node->mpa_frame_size = ntohs(mpa_frame->priv_data_len);
/* make sure mpa private data len is less than 512 bytes */
if (cm_node->mpa_frame_size > IETF_MAX_PRIV_DATA_LEN) {
nes_debug(NES_DBG_CM, "The received Length of Private"
" Data field exceeds 512 octets\n");
return -EINVAL;
}
/*
* make sure MPA receiver interoperate with the
* received MPA version and MPA key information
*
*/
if (mpa_frame->rev != mpa_version) {
nes_debug(NES_DBG_CM, "The received mpa version"
" can not be interoperated\n");
return -EINVAL;
}
if (cm_node->state != NES_CM_STATE_MPAREQ_SENT) {
if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE)) {
nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n");
return -EINVAL;
}
} else {
if (memcmp(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE)) {
nes_debug(NES_DBG_CM, "Unexpected MPA Key received \n");
return -EINVAL;
}
}
if (cm_node->mpa_frame_size + sizeof(struct ietf_mpa_frame) != len) {
nes_debug(NES_DBG_CM, "The received ietf buffer was not right"
@ -1974,7 +2001,7 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core,
if (!cm_node)
return NULL;
mpa_frame = &cm_node->mpa_frame;
strcpy(mpa_frame->key, IEFT_MPA_KEY_REQ);
memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE);
mpa_frame->flags = IETF_MPA_FLAGS_CRC;
mpa_frame->rev = IETF_MPA_VERSION;
mpa_frame->priv_data_len = htons(private_data_len);
@ -2929,7 +2956,7 @@ int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
if (cm_node->mpa_frame_size > MAX_CM_BUFFER)
return -EINVAL;
strcpy(&cm_node->mpa_frame.key[0], IEFT_MPA_KEY_REP);
memcpy(&cm_node->mpa_frame.key[0], IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE);
if (loopback) {
memcpy(&loopback->mpa_frame.priv_data, pdata, pdata_len);
loopback->mpa_frame.priv_data_len = pdata_len;