diff mbox series

[bpf-next,03/10] bpf: Use EOPNOTSUPP in bpf_tcp_check_syncookie

Message ID 20211019144655.3483197-4-maximmi@nvidia.com (mailing list archive)
State Changes Requested
Delegated to: BPF
Headers show
Series New BPF helpers to accelerate synproxy | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR success PR summary
netdev/cover_letter success Series has a cover letter
netdev/fixes_present success Fixes tag not required for -next series
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for bpf-next
netdev/subject_prefix success Link
netdev/cc_maintainers warning 1 maintainers not CCed: llvm@lists.linux.dev
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 26 this patch: 26
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success No Fixes tag
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 26 this patch: 26
netdev/header_inline success No static functions without inline keyword in header files
bpf/vmtest-bpf-next success VM_Test

Commit Message

Maxim Mikityanskiy Oct. 19, 2021, 2:46 p.m. UTC 
When CONFIG_SYN_COOKIES is off, bpf_tcp_check_syncookie returns
ENOTSUPP. It's a non-standard and deprecated code. The related function
bpf_tcp_gen_syncookie and most of the other functions use EOPNOTSUPP if
some feature is not available. This patch changes ENOTSUPP to EOPNOTSUPP
in bpf_tcp_check_syncookie.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
---
 net/core/filter.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/core/filter.c b/net/core/filter.c
index 6cfb676e1adb..2c5877b775d9 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -6754,7 +6754,7 @@  BPF_CALL_5(bpf_tcp_check_syncookie, struct sock *, sk, void *, iph, u32, iph_len
 
 	return -ENOENT;
 #else
-	return -ENOTSUPP;
+	return -EOPNOTSUPP;
 #endif
 }