zcip: simplify code a bit

diff --git a/networking/zcip.c b/networking/zcip.c
index 129155f..ef9aa21 100644 (file)
--- a/networking/zcip.c
+++ b/networking/zcip.c
@@ -177,7 +177,6 @@ int zcip_main(int argc, char **argv)
 {
        int state = PROBE;
        struct ether_addr eth_addr;
-       const char *why;
        char *r_opt;
        unsigned opts;
 
@@ -319,8 +318,6 @@ int zcip_main(int argc, char **argv)
                VDBG("...wait %d %s nprobes=%u, nclaims=%u\n",
                                timeout_ms, intf, nprobes, nclaims);
 
-       // FIXME: do we really receive ALL packets here??
-       // if yes, set up filtering to get ARPs only!!! (see arping)
                switch (safe_poll(fds, 1, timeout_ms)) {
 
                default:
@@ -447,8 +444,7 @@ int zcip_main(int argc, char **argv)
 
                        // read ARP packet
                        if (safe_read(sock_fd, &p, sizeof(p)) < 0) {
-                               why = "recv";
-                               goto bad;
+                               bb_perror_msg_and_die(bb_msg_read_error);
                        }
                        if (p.eth.ether_type != htons(ETHERTYPE_ARP))
                                continue;
@@ -550,7 +546,4 @@ int zcip_main(int argc, char **argv)
                        break; // case 1 (packets arriving)
                } // switch poll
        } // while (1)
- bad:
-       bb_perror_msg("%s: %s", intf, why);
-       return EXIT_FAILURE;
 }