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| author | Wen Gu <guwen@linux.alibaba.com> | 2021-11-15 17:45:07 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-15 14:42:24 +0000 |
| commit | cf4f5530bb55ef7d5a91036b26676643b80b1616 (patch) | |
| tree | 2f0b4def1efc452c8e88cd31eab40a3d9f42b7b4 /net/smc | |
| parent | 938cca9e4109b30ee1d476904538225a825e54eb (diff) | |
| download | linux-stable-cf4f5530bb55ef7d5a91036b26676643b80b1616.tar.gz linux-stable-cf4f5530bb55ef7d5a91036b26676643b80b1616.tar.bz2 linux-stable-cf4f5530bb55ef7d5a91036b26676643b80b1616.zip | |
net/smc: Make sure the link_id is unique
The link_id is supposed to be unique, but smcr_next_link_id() doesn't
skip the used link_id as expected. So the patch fixes this.
Fixes: 026c381fb477 ("net/smc: introduce link_idx for link group array")
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Acked-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc')
| -rw-r--r-- | net/smc/smc_core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c index 49b8ba3bb683..25ebd30feecd 100644 --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -708,13 +708,14 @@ static u8 smcr_next_link_id(struct smc_link_group *lgr) int i; while (1) { +again: link_id = ++lgr->next_link_id; if (!link_id) /* skip zero as link_id */ link_id = ++lgr->next_link_id; for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) { if (smc_link_usable(&lgr->lnk[i]) && lgr->lnk[i].link_id == link_id) - continue; + goto again; } break; } |