diff options
Diffstat (limited to 'tools/lib/bpf/netlink.c')
| -rw-r--r-- | tools/lib/bpf/netlink.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/lib/bpf/netlink.c b/tools/lib/bpf/netlink.c index 469e068dd0c5..fde1d7bf8199 100644 --- a/tools/lib/bpf/netlink.c +++ b/tools/lib/bpf/netlink.c @@ -65,18 +65,23 @@ static int bpf_netlink_recv(int sock, __u32 nl_pid, int seq, __dump_nlmsg_t _fn, dump_nlmsg_t fn, void *cookie) { + bool multipart = true; struct nlmsgerr *err; struct nlmsghdr *nh; char buf[4096]; int len, ret; - while (1) { + while (multipart) { + multipart = false; len = recv(sock, buf, sizeof(buf), 0); if (len < 0) { ret = -errno; goto done; } + if (len == 0) + break; + for (nh = (struct nlmsghdr *)buf; NLMSG_OK(nh, len); nh = NLMSG_NEXT(nh, len)) { if (nh->nlmsg_pid != nl_pid) { @@ -87,6 +92,8 @@ static int bpf_netlink_recv(int sock, __u32 nl_pid, int seq, ret = -LIBBPF_ERRNO__INVSEQ; goto done; } + if (nh->nlmsg_flags & NLM_F_MULTI) + multipart = true; switch (nh->nlmsg_type) { case NLMSG_ERROR: err = (struct nlmsgerr *)NLMSG_DATA(nh); |