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nvmet-tcp: fix incomplete data digest send
Current nvmet_try_send_ddgst() code does not check whether
all data digest bytes are transmitted, fix this by returning
-EAGAIN if all data digest bytes are not transmitted.
Fixes: 872d26a391
("nvmet-tcp: add NVMe over TCP target driver")
Signed-off-by: Varun Prakash <varun@chelsio.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
parent
af21250bb5
commit
102110efdf
1 changed files with 6 additions and 1 deletions
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@ -711,10 +711,11 @@ static int nvmet_try_send_r2t(struct nvmet_tcp_cmd *cmd, bool last_in_batch)
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static int nvmet_try_send_ddgst(struct nvmet_tcp_cmd *cmd, bool last_in_batch)
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{
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struct nvmet_tcp_queue *queue = cmd->queue;
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int left = NVME_TCP_DIGEST_LENGTH - cmd->offset;
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struct msghdr msg = { .msg_flags = MSG_DONTWAIT };
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struct kvec iov = {
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.iov_base = (u8 *)&cmd->exp_ddgst + cmd->offset,
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.iov_len = NVME_TCP_DIGEST_LENGTH - cmd->offset
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.iov_len = left
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};
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int ret;
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@ -728,6 +729,10 @@ static int nvmet_try_send_ddgst(struct nvmet_tcp_cmd *cmd, bool last_in_batch)
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return ret;
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cmd->offset += ret;
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left -= ret;
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if (left)
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return -EAGAIN;
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if (queue->nvme_sq.sqhd_disabled) {
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cmd->queue->snd_cmd = NULL;
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