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iplink: communicate ifindex for xdp offload 

When xdpoffload option is used, communicate the ifindex down
to the kernel to trigger device-specific load.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Jakub Kicinski 2017-11-23 18:12:08 -08:00 committed by Stephen Hemminger
parent eb91c55731
commit 4f2eb14f71
3 changed files with 12 additions and 6 deletions
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4
ip/iplink.c
View File

@ -631,8 +631,8 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req,
bool offload = strcmp(*argv, "xdpoffload") == 0; bool offload = strcmp(*argv, "xdpoffload") == 0;
NEXT_ARG(); NEXT_ARG();
if (xdp_parse(&argc, &argv, req, generic, drv, if (xdp_parse(&argc, &argv, req, dev_index,
offload)) generic, drv, offload))
exit(-1); exit(-1);
} else if (strcmp(*argv, "netns") == 0) { } else if (strcmp(*argv, "netns") == 0) {
NEXT_ARG(); NEXT_ARG();

10
ip/iplink_xdp.c
View File

@ -48,8 +48,8 @@ static int xdp_delete(struct xdp_req *xdp)
return 0; return 0;
} }
int xdp_parse(int *argc, char ***argv, struct iplink_req *req, bool generic, int xdp_parse(int *argc, char ***argv, struct iplink_req *req, __u32 ifindex,
bool drv, bool offload) bool generic, bool drv, bool offload)
{ {
struct bpf_cfg_in cfg = { struct bpf_cfg_in cfg = {
.type = BPF_PROG_TYPE_XDP, .type = BPF_PROG_TYPE_XDP,
@ -60,6 +60,12 @@ int xdp_parse(int *argc, char ***argv, struct iplink_req *req, bool generic,
.req = req, .req = req,
}; };
if (offload) {
if (!ifindex)
incomplete_command();
cfg.ifindex = ifindex;
}
if (!force) if (!force)
xdp.flags |= XDP_FLAGS_UPDATE_IF_NOEXIST; xdp.flags |= XDP_FLAGS_UPDATE_IF_NOEXIST;
if (generic) if (generic)

4
ip/xdp.h
View File

@ -4,8 +4,8 @@
#include "utils.h" #include "utils.h"
int xdp_parse(int *argc, char ***argv, struct iplink_req *req, bool generic, int xdp_parse(int *argc, char ***argv, struct iplink_req *req, __u32 ifindex,
bool drv, bool offload); bool generic, bool drv, bool offload);
void xdp_dump(FILE *fp, struct rtattr *tb, bool link, bool details); void xdp_dump(FILE *fp, struct rtattr *tb, bool link, bool details);
#endif /* __XDP__ */ #endif /* __XDP__ */