diff mbox series

[RFC,bpf-next,v2,07/11] selftests/xsk: Support XDP_TX_METADATA_LEN

Message ID 20230621170244.1283336-8-sdf@google.com (mailing list archive)
State RFC
Delegated to: BPF
Headers show
Series bpf: Netdev TX metadata | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR fail PR summary
bpf/vmtest-bpf-next-VM_Test-1 success Logs for ${{ matrix.test }} on ${{ matrix.arch }} with ${{ matrix.toolchain_full }}
bpf/vmtest-bpf-next-VM_Test-2 success Logs for ShellCheck
bpf/vmtest-bpf-next-VM_Test-3 fail Logs for build for aarch64 with gcc
bpf/vmtest-bpf-next-VM_Test-4 fail Logs for build for s390x with gcc
bpf/vmtest-bpf-next-VM_Test-5 fail Logs for build for x86_64 with gcc
bpf/vmtest-bpf-next-VM_Test-6 fail Logs for build for x86_64 with llvm-16
bpf/vmtest-bpf-next-VM_Test-7 success Logs for set-matrix
bpf/vmtest-bpf-next-VM_Test-8 success Logs for veristat
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for bpf-next, async
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 fail Errors and warnings before: 13 this patch: 13
netdev/cc_maintainers warning 8 maintainers not CCed: netdev@vger.kernel.org magnus.karlsson@intel.com maciej.fijalkowski@intel.com shuah@kernel.org mykolal@fb.com linux-kselftest@vger.kernel.org jonathan.lemon@gmail.com bjorn@kernel.org
netdev/build_clang fail Errors and warnings before: 13 this patch: 13
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 fail Errors and warnings before: 13 this patch: 13
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 48 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Stanislav Fomichev June 21, 2023, 5:02 p.m. UTC 
Add new config field and call setsockopt.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
---
 tools/testing/selftests/bpf/xsk.c | 17 +++++++++++++++++
 tools/testing/selftests/bpf/xsk.h |  1 +
 2 files changed, 18 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/xsk.c b/tools/testing/selftests/bpf/xsk.c
index 687d83e707f8..c659713e2d43 100644
--- a/tools/testing/selftests/bpf/xsk.c
+++ b/tools/testing/selftests/bpf/xsk.c
@@ -47,6 +47,10 @@ 
  #define PF_XDP AF_XDP
 #endif
 
+#ifndef XDP_TX_METADATA_LEN
+#define XDP_TX_METADATA_LEN 9
+#endif
+
 #define pr_warn(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
 
 #define XSKMAP_SIZE 1
@@ -124,12 +128,14 @@  static int xsk_set_xdp_socket_config(struct xsk_socket_config *cfg,
 		cfg->rx_size = XSK_RING_CONS__DEFAULT_NUM_DESCS;
 		cfg->tx_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
 		cfg->bind_flags = 0;
+		cfg->tx_metadata_len = 0;
 		return 0;
 	}
 
 	cfg->rx_size = usr_cfg->rx_size;
 	cfg->tx_size = usr_cfg->tx_size;
 	cfg->bind_flags = usr_cfg->bind_flags;
+	cfg->tx_metadata_len = usr_cfg->tx_metadata_len;
 
 	return 0;
 }
@@ -479,6 +485,17 @@  int xsk_socket__create_shared(struct xsk_socket **xsk_ptr,
 			umem->tx_ring_setup_done = true;
 	}
 
+	if (xsk->config.tx_metadata_len) {
+		int optval = xsk->config.tx_metadata_len;
+
+		err = setsockopt(xsk->fd, SOL_XDP, XDP_TX_METADATA_LEN,
+				 &optval, sizeof(optval));
+		if (err) {
+			err = -errno;
+			goto out_put_ctx;
+		}
+	}
+
 	err = xsk_get_mmap_offsets(xsk->fd, &off);
 	if (err) {
 		err = -errno;
diff --git a/tools/testing/selftests/bpf/xsk.h b/tools/testing/selftests/bpf/xsk.h
index 8da8d557768b..57e0af403aa8 100644
--- a/tools/testing/selftests/bpf/xsk.h
+++ b/tools/testing/selftests/bpf/xsk.h
@@ -212,6 +212,7 @@  struct xsk_socket_config {
 	__u32 rx_size;
 	__u32 tx_size;
 	__u16 bind_flags;
+	__u8 tx_metadata_len;
 };
 
 /* Set config to NULL to get the default configuration. */