diff mbox series

[RFC,v1,08/10] net: qrtr: Drop remote {NEW|DEL}_LOOKUP messages

Message ID 20241018181842.1368394-9-denkenz@gmail.com (mailing list archive)
State RFC
Delegated to: Netdev Maintainers
Headers show
Series QRTR Multi-endpoint support | expand

Checks

Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 7 this patch: 7
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 7 this patch: 7
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 11 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 1 this patch: 1
netdev/source_inline success Was 0 now: 0

Commit Message

Denis Kenzior Oct. 18, 2024, 6:18 p.m. UTC 
These messages are explicitly filtered out by the in-kernel name
service (ns.c).  Filter them out even earlier to save some CPU cycles.

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Reviewed-by: Marcel Holtmann <marcel@holtmann.org>
Reviewed-by: Andy Gross <agross@kernel.org>
---
 net/qrtr/af_qrtr.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/net/qrtr/af_qrtr.c b/net/qrtr/af_qrtr.c
index b2f9c25ba8f8..95c9679725ee 100644
--- a/net/qrtr/af_qrtr.c
+++ b/net/qrtr/af_qrtr.c
@@ -560,6 +560,11 @@  int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len)
 	if (!size || len != ALIGN(size, 4) + hdrlen)
 		goto err;
 
+	/* Don't allow remote lookups */
+	if (cb->type == QRTR_TYPE_NEW_LOOKUP ||
+	    cb->type == QRTR_TYPE_DEL_LOOKUP)
+		goto err;
+
 	if ((cb->type == QRTR_TYPE_NEW_SERVER ||
 	     cb->type == QRTR_TYPE_RESUME_TX) &&
 	    size < sizeof(struct qrtr_ctrl_pkt))