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nvme-tcp: don't check blk_mq_tag_to_rq when receiving pdu data 

[ Upstream commit 3b01a9d0caa8276d9ce314e09610f7fb70f49a00 ]

We already validate it when receiving the c2hdata pdu header
and this is not changing so this is a redundant check.

Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sagi Grimberg 2021-06-16 14:19:35 -07:00 committed by Greg Kroah-Hartman
parent 072660f6c6
commit fb8593e8ed
1 changed files with 3 additions and 11 deletions
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14
drivers/nvme/host/tcp.c
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@ -642,17 +642,9 @@ static int nvme_tcp_recv_data(struct nvme_tcp_queue *queue, struct sk_buff *skb,
unsigned int *offset, size_t *len)
{
struct nvme_tcp_data_pdu *pdu = (void *)queue->pdu;
struct nvme_tcp_request *req;
struct request *rq;
rq = blk_mq_tag_to_rq(nvme_tcp_tagset(queue), pdu->command_id);
if (!rq) {
dev_err(queue->ctrl->ctrl.device,
"queue %d tag %#x not found\n",
nvme_tcp_queue_id(queue), pdu->command_id);
return -ENOENT;
}
req = blk_mq_rq_to_pdu(rq);
struct request *rq =
blk_mq_tag_to_rq(nvme_tcp_tagset(queue), pdu->command_id);
struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
while (true) {
int recv_len, ret;