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lib/mpls_pton.c
63 строки
1 KB
Stephen Hemminger
whitespace cleanups
06 июн 2023, 04:45
06 июн 2023, 04:45
5c4697a
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/* SPDX-License-Identifier: GPL-2.0 */ #include <errno.h> #include <string.h> #include <sys/types.h> #include <netinet/in.h> #include <linux/mpls.h> #include "utils.h" static int mpls_pton1(const char *name, struct mpls_label *addr, unsigned int maxlabels) { char *endp; unsigned count; for (count = 0; count < maxlabels; count++) { unsigned long label; label = strtoul(name, &endp, 0); /* Fail when the label value is out or range */ if (label >= (1 << 20)) return 0; if (endp == name) /* no digits */ return 0; addr->entry = htonl(label << MPLS_LS_LABEL_SHIFT); if (*endp == '\0') { addr->entry |= htonl(1 << MPLS_LS_S_SHIFT); return 1; } /* Bad character in the address */ if (*endp != '/') return 0; name = endp + 1; addr += 1; } /* The address was too long */ fprintf(stderr, "Error: too many labels.\n"); return 0; } int mpls_pton(int af, const char *src, void *addr, size_t alen) { unsigned int maxlabels = alen / sizeof(struct mpls_label); int err; switch (af) { case AF_MPLS: errno = 0; err = mpls_pton1(src, (struct mpls_label *)addr, maxlabels); break; default: errno = EAFNOSUPPORT; err = -1; } return err; }