samples/bpf: xdpsock, minor fixes

- xsks_map size was fixed to 4, changed it MAX_SOCKS
- Remove redundant definition of MAX_SOCKS in xdpsock_user.c
- In dump_stats(), add NULL check for xsks[i]

Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

diff --git a/samples/bpf/xdpsock_kern.c b/samples/bpf/xdpsock_kern.c
index d8806c4..b8ccd08 100644 (file)
--- a/samples/bpf/xdpsock_kern.c
+++ b/samples/bpf/xdpsock_kern.c
@@ -16,7 +16,7 @@ struct bpf_map_def SEC("maps") xsks_map = {
        .type = BPF_MAP_TYPE_XSKMAP,
        .key_size = sizeof(int),
        .value_size = sizeof(int),
-       .max_entries = 4,
+       .max_entries = MAX_SOCKS,
 };
 
 struct bpf_map_def SEC("maps") rr_map = {

diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index b390611..57ecadc 100644 (file)
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -118,7 +118,6 @@ struct xdpsock {
        unsigned long prev_tx_npkts;
 };
 
-#define MAX_SOCKS 4
 static int num_socks;
 struct xdpsock *xsks[MAX_SOCKS];
 
@@ -596,7 +595,7 @@ static void dump_stats(void)
 
        prev_time = now;
 
-       for (i = 0; i < num_socks; i++) {
+       for (i = 0; i < num_socks && xsks[i]; i++) {
                char *fmt = "%-15s %'-11.0f %'-11lu\n";
                double rx_pps, tx_pps;