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tcp: refactor of header/data digest support check

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Some functions performed incorrect header/data digest
support check, align it with NVMEoF spec. Use a table
to check if PDU supports digest depending on its type.

Change-Id: I6170dd19ace017f37fda0a923f604732799460b9
Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/483375
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Community-CI: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom SPDK FC-NVMe CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Alexey Marchuk 2020-01-29 17:50:14 +03:00 committed by Jim Harris
parent 48f38636ce
commit 9727aa281f
3 changed files with 35 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
include/spdk_internal/nvme_tcp.h
View File

@ -169,6 +169,30 @@ enum nvme_tcp_qpair_state {
NVME_TCP_QPAIR_STATE_EXITED = 4,
};
static const bool g_nvme_tcp_hdgst[] = {
[SPDK_NVME_TCP_PDU_TYPE_IC_REQ] = false,
[SPDK_NVME_TCP_PDU_TYPE_IC_RESP] = false,
[SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ] = false,
[SPDK_NVME_TCP_PDU_TYPE_C2H_TERM_REQ] = false,
[SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD] = true,
[SPDK_NVME_TCP_PDU_TYPE_CAPSULE_RESP] = true,
[SPDK_NVME_TCP_PDU_TYPE_H2C_DATA] = true,
[SPDK_NVME_TCP_PDU_TYPE_C2H_DATA] = true,
[SPDK_NVME_TCP_PDU_TYPE_R2T] = true
};
static const bool g_nvme_tcp_ddgst[] = {
[SPDK_NVME_TCP_PDU_TYPE_IC_REQ] = false,
[SPDK_NVME_TCP_PDU_TYPE_IC_RESP] = false,
[SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ] = false,
[SPDK_NVME_TCP_PDU_TYPE_C2H_TERM_REQ] = false,
[SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD] = true,
[SPDK_NVME_TCP_PDU_TYPE_CAPSULE_RESP] = false,
[SPDK_NVME_TCP_PDU_TYPE_H2C_DATA] = true,
[SPDK_NVME_TCP_PDU_TYPE_C2H_DATA] = true,
[SPDK_NVME_TCP_PDU_TYPE_R2T] = false
};
static uint32_t
nvme_tcp_pdu_calc_header_digest(struct nvme_tcp_pdu *pdu)
{
@ -342,7 +366,6 @@ static int
nvme_tcp_build_iovs(struct iovec *iov, int iovcnt, struct nvme_tcp_pdu *pdu,
bool hdgst_enable, bool ddgst_enable, uint32_t *_mapped_length)
{
int enable_digest;
uint32_t hlen, plen;
struct _nvme_tcp_sgl *sgl;
@ -353,17 +376,9 @@ nvme_tcp_build_iovs(struct iovec *iov, int iovcnt, struct nvme_tcp_pdu *pdu,
sgl = &pdu->sgl;
_nvme_tcp_sgl_init(sgl, iov, iovcnt, 0);
hlen = pdu->hdr->common.hlen;
enable_digest = 1;
if (pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_IC_REQ ||
pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_IC_RESP ||
pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ ||
pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_C2H_TERM_REQ) {
/* this PDU should be sent without digest */
enable_digest = 0;
}
/* Header Digest */
if (enable_digest && hdgst_enable) {
if (g_nvme_tcp_hdgst[pdu->hdr->common.pdu_type] && hdgst_enable) {
hlen += SPDK_NVME_TCP_DIGEST_LEN;
}
@ -398,7 +413,7 @@ nvme_tcp_build_iovs(struct iovec *iov, int iovcnt, struct nvme_tcp_pdu *pdu,
}
/* Data Digest */
if (enable_digest && ddgst_enable) {
if (g_nvme_tcp_ddgst[pdu->hdr->common.pdu_type] && ddgst_enable) {
plen += SPDK_NVME_TCP_DIGEST_LEN;
_nvme_tcp_sgl_append(sgl, pdu->data_digest, SPDK_NVME_TCP_DIGEST_LEN);
}
@ -604,12 +619,8 @@ nvme_tcp_pdu_calc_psh_len(struct nvme_tcp_pdu *pdu, bool hdgst_enable)
uint8_t psh_len, pdo, padding_len;
psh_len = pdu->hdr->common.hlen;
/* Only the following five type has header digest */
if (((pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_CAPSULE_CMD) ||
(pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_H2C_DATA) ||
(pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_CAPSULE_RESP) ||
(pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_C2H_DATA) ||
(pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_R2T)) && hdgst_enable) {
if (g_nvme_tcp_hdgst[pdu->hdr->common.pdu_type] && hdgst_enable) {
pdu->has_hdgst = true;
psh_len += SPDK_NVME_TCP_DIGEST_LEN;
if (pdu->hdr->common.plen > psh_len) {

16
lib/nvme/nvme_tcp.c
View File

@ -1,8 +1,8 @@
/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
* Copyright (c) Intel Corporation. All rights reserved.
* Copyright (c) 2020 Mellanox Technologies LTD. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -318,27 +318,20 @@ nvme_tcp_qpair_write_pdu(struct nvme_tcp_qpair *tqpair,
nvme_tcp_qpair_xfer_complete_cb cb_fn,
void *cb_arg)
{
int enable_digest;
int hlen;
uint32_t crc32c;
uint32_t mapped_length = 0;
hlen = pdu->hdr->common.hlen;
enable_digest = 1;
if (pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_IC_REQ ||
pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_H2C_TERM_REQ) {
/* this PDU should be sent without digest */
enable_digest = 0;
}
/* Header Digest */
if (enable_digest && tqpair->host_hdgst_enable) {
if (g_nvme_tcp_hdgst[pdu->hdr->common.pdu_type] && tqpair->host_hdgst_enable) {
crc32c = nvme_tcp_pdu_calc_header_digest(pdu);
MAKE_DIGEST_WORD((uint8_t *)pdu->hdr->raw + hlen, crc32c);
}
/* Data Digest */
if (pdu->data_len > 0 && enable_digest && tqpair->host_ddgst_enable) {
if (pdu->data_len > 0 && g_nvme_tcp_ddgst[pdu->hdr->common.pdu_type] && tqpair->host_ddgst_enable) {
crc32c = nvme_tcp_pdu_calc_data_digest(pdu);
MAKE_DIGEST_WORD(pdu->data_digest, crc32c);
}
@ -1318,7 +1311,6 @@ nvme_tcp_read_pdu(struct nvme_tcp_qpair *tqpair, uint32_t *reaped)
tqpair->host_ddgst_enable)) {
data_len += SPDK_NVME_TCP_DIGEST_LEN;
pdu->ddgst_enable = true;
}
rc = nvme_tcp_read_payload_data(tqpair->sock, pdu);

13
lib/nvmf/tcp.c
View File

@ -2,7 +2,7 @@
* BSD LICENSE
*
* Copyright (c) Intel Corporation. All rights reserved.
* Copyright (c) 2019 Mellanox Technologies LTD. All rights reserved.
* Copyright (c) 2019, 2020 Mellanox Technologies LTD. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -753,7 +753,6 @@ spdk_nvmf_tcp_qpair_write_pdu(struct spdk_nvmf_tcp_qpair *tqpair,
nvme_tcp_qpair_xfer_complete_cb cb_fn,
void *cb_arg)
{
int enable_digest;
int hlen;
uint32_t crc32c;
uint32_t mapped_length = 0;
@ -762,21 +761,15 @@ spdk_nvmf_tcp_qpair_write_pdu(struct spdk_nvmf_tcp_qpair *tqpair,
assert(&tqpair->pdu_in_progress != pdu);
hlen = pdu->hdr->common.hlen;
enable_digest = 1;
if (pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_IC_RESP ||
pdu->hdr->common.pdu_type == SPDK_NVME_TCP_PDU_TYPE_C2H_TERM_REQ) {
/* this PDU should be sent without digest */
enable_digest = 0;
}
/* Header Digest */
if (enable_digest && tqpair->host_hdgst_enable) {
if (g_nvme_tcp_hdgst[pdu->hdr->common.pdu_type] && tqpair->host_hdgst_enable) {
crc32c = nvme_tcp_pdu_calc_header_digest(pdu);
MAKE_DIGEST_WORD((uint8_t *)pdu->hdr->raw + hlen, crc32c);
}
/* Data Digest */
if (pdu->data_len > 0 && enable_digest && tqpair->host_ddgst_enable) {
if (pdu->data_len > 0 && g_nvme_tcp_ddgst[pdu->hdr->common.pdu_type] && tqpair->host_ddgst_enable) {
crc32c = nvme_tcp_pdu_calc_data_digest(pdu);
MAKE_DIGEST_WORD(pdu->data_digest, crc32c);
}