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path: root/net/smc/smc_llc.c
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Diffstat (limited to 'net/smc/smc_llc.c')
-rw-r--r--net/smc/smc_llc.c63
1 files changed, 49 insertions, 14 deletions
diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c
index 2e7560eba981..72f4b72eb175 100644
--- a/net/smc/smc_llc.c
+++ b/net/smc/smc_llc.c
@@ -383,9 +383,11 @@ int smc_llc_send_confirm_link(struct smc_link *link,
struct smc_wr_buf *wr_buf;
int rc;
+ if (!smc_wr_tx_link_hold(link))
+ return -ENOLINK;
rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
if (rc)
- return rc;
+ goto put_out;
confllc = (struct smc_llc_msg_confirm_link *)wr_buf;
memset(confllc, 0, sizeof(*confllc));
confllc->hd.common.type = SMC_LLC_CONFIRM_LINK;
@@ -402,6 +404,8 @@ int smc_llc_send_confirm_link(struct smc_link *link,
confllc->max_links = SMC_LLC_ADD_LNK_MAX_LINKS;
/* send llc message */
rc = smc_wr_tx_send(link, pend);
+put_out:
+ smc_wr_tx_link_put(link);
return rc;
}
@@ -415,9 +419,11 @@ static int smc_llc_send_confirm_rkey(struct smc_link *send_link,
struct smc_link *link;
int i, rc, rtok_ix;
+ if (!smc_wr_tx_link_hold(send_link))
+ return -ENOLINK;
rc = smc_llc_add_pending_send(send_link, &wr_buf, &pend);
if (rc)
- return rc;
+ goto put_out;
rkeyllc = (struct smc_llc_msg_confirm_rkey *)wr_buf;
memset(rkeyllc, 0, sizeof(*rkeyllc));
rkeyllc->hd.common.type = SMC_LLC_CONFIRM_RKEY;
@@ -444,6 +450,8 @@ static int smc_llc_send_confirm_rkey(struct smc_link *send_link,
(u64)sg_dma_address(rmb_desc->sgt[send_link->link_idx].sgl));
/* send llc message */
rc = smc_wr_tx_send(send_link, pend);
+put_out:
+ smc_wr_tx_link_put(send_link);
return rc;
}
@@ -456,9 +464,11 @@ static int smc_llc_send_delete_rkey(struct smc_link *link,
struct smc_wr_buf *wr_buf;
int rc;
+ if (!smc_wr_tx_link_hold(link))
+ return -ENOLINK;
rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
if (rc)
- return rc;
+ goto put_out;
rkeyllc = (struct smc_llc_msg_delete_rkey *)wr_buf;
memset(rkeyllc, 0, sizeof(*rkeyllc));
rkeyllc->hd.common.type = SMC_LLC_DELETE_RKEY;
@@ -467,6 +477,8 @@ static int smc_llc_send_delete_rkey(struct smc_link *link,
rkeyllc->rkey[0] = htonl(rmb_desc->mr_rx[link->link_idx]->rkey);
/* send llc message */
rc = smc_wr_tx_send(link, pend);
+put_out:
+ smc_wr_tx_link_put(link);
return rc;
}
@@ -480,9 +492,11 @@ int smc_llc_send_add_link(struct smc_link *link, u8 mac[], u8 gid[],
struct smc_wr_buf *wr_buf;
int rc;
+ if (!smc_wr_tx_link_hold(link))
+ return -ENOLINK;
rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
if (rc)
- return rc;
+ goto put_out;
addllc = (struct smc_llc_msg_add_link *)wr_buf;
memset(addllc, 0, sizeof(*addllc));
@@ -504,6 +518,8 @@ int smc_llc_send_add_link(struct smc_link *link, u8 mac[], u8 gid[],
}
/* send llc message */
rc = smc_wr_tx_send(link, pend);
+put_out:
+ smc_wr_tx_link_put(link);
return rc;
}
@@ -517,9 +533,11 @@ int smc_llc_send_delete_link(struct smc_link *link, u8 link_del_id,
struct smc_wr_buf *wr_buf;
int rc;
+ if (!smc_wr_tx_link_hold(link))
+ return -ENOLINK;
rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
if (rc)
- return rc;
+ goto put_out;
delllc = (struct smc_llc_msg_del_link *)wr_buf;
memset(delllc, 0, sizeof(*delllc));
@@ -536,6 +554,8 @@ int smc_llc_send_delete_link(struct smc_link *link, u8 link_del_id,
delllc->reason = htonl(reason);
/* send llc message */
rc = smc_wr_tx_send(link, pend);
+put_out:
+ smc_wr_tx_link_put(link);
return rc;
}
@@ -547,9 +567,11 @@ static int smc_llc_send_test_link(struct smc_link *link, u8 user_data[16])
struct smc_wr_buf *wr_buf;
int rc;
+ if (!smc_wr_tx_link_hold(link))
+ return -ENOLINK;
rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
if (rc)
- return rc;
+ goto put_out;
testllc = (struct smc_llc_msg_test_link *)wr_buf;
memset(testllc, 0, sizeof(*testllc));
testllc->hd.common.type = SMC_LLC_TEST_LINK;
@@ -557,6 +579,8 @@ static int smc_llc_send_test_link(struct smc_link *link, u8 user_data[16])
memcpy(testllc->user_data, user_data, sizeof(testllc->user_data));
/* send llc message */
rc = smc_wr_tx_send(link, pend);
+put_out:
+ smc_wr_tx_link_put(link);
return rc;
}
@@ -567,13 +591,16 @@ static int smc_llc_send_message(struct smc_link *link, void *llcbuf)
struct smc_wr_buf *wr_buf;
int rc;
- if (!smc_link_usable(link))
+ if (!smc_wr_tx_link_hold(link))
return -ENOLINK;
rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
if (rc)
- return rc;
+ goto put_out;
memcpy(wr_buf, llcbuf, sizeof(union smc_llc_msg));
- return smc_wr_tx_send(link, pend);
+ rc = smc_wr_tx_send(link, pend);
+put_out:
+ smc_wr_tx_link_put(link);
+ return rc;
}
/* schedule an llc send on link, may wait for buffers,
@@ -586,13 +613,16 @@ static int smc_llc_send_message_wait(struct smc_link *link, void *llcbuf)
struct smc_wr_buf *wr_buf;
int rc;
- if (!smc_link_usable(link))
+ if (!smc_wr_tx_link_hold(link))
return -ENOLINK;
rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
if (rc)
- return rc;
+ goto put_out;
memcpy(wr_buf, llcbuf, sizeof(union smc_llc_msg));
- return smc_wr_tx_send_wait(link, pend, SMC_LLC_WAIT_TIME);
+ rc = smc_wr_tx_send_wait(link, pend, SMC_LLC_WAIT_TIME);
+put_out:
+ smc_wr_tx_link_put(link);
+ return rc;
}
/********************************* receive ***********************************/
@@ -672,9 +702,11 @@ static int smc_llc_add_link_cont(struct smc_link *link,
struct smc_buf_desc *rmb;
u8 n;
+ if (!smc_wr_tx_link_hold(link))
+ return -ENOLINK;
rc = smc_llc_add_pending_send(link, &wr_buf, &pend);
if (rc)
- return rc;
+ goto put_out;
addc_llc = (struct smc_llc_msg_add_link_cont *)wr_buf;
memset(addc_llc, 0, sizeof(*addc_llc));
@@ -706,7 +738,10 @@ static int smc_llc_add_link_cont(struct smc_link *link,
addc_llc->hd.length = sizeof(struct smc_llc_msg_add_link_cont);
if (lgr->role == SMC_CLNT)
addc_llc->hd.flags |= SMC_LLC_FLAG_RESP;
- return smc_wr_tx_send(link, pend);
+ rc = smc_wr_tx_send(link, pend);
+put_out:
+ smc_wr_tx_link_put(link);
+ return rc;
}
static int smc_llc_cli_rkey_exchange(struct smc_link *link,
generated by cgit (git 2.34.1) at 2024-06-16 11:47:36 +0000