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Differential D26449 Diff 77371 usr.bin/netstat/nhops.c

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usr.bin/netstat/nhops.c

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}; };
struct nhop_map { struct nhop_map {
struct nhop_entry *ptr; struct nhop_entry *ptr;
size_t size; size_t size;
}; };
static struct nhop_map global_nhop_map; static struct nhop_map global_nhop_map;
static void nhop_map_update(struct nhop_map *map, uint32_t idx,
char *gw, char *ifname);
static struct nhop_entry *nhop_get(struct nhop_map *map, uint32_t idx); static struct nhop_entry *nhop_get(struct nhop_map *map, uint32_t idx);
static struct ifmap_entry *ifmap; static struct ifmap_entry *ifmap;
static size_t ifmap_size; static size_t ifmap_size;
static void static void
print_sockaddr_buf(char *buf, size_t bufsize, const struct sockaddr *sa) print_sockaddr_buf(char *buf, size_t bufsize, const struct sockaddr *sa)
▲ Show 20 Lines • Show All 68 Lines • ▼ Show 20 Lines xo_emit("{T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%-*.*s} {T:/%*.*s} "
wid_dst, wid_dst, "IFA", wid_dst, wid_dst, "IFA",
wid_gw, wid_gw, "Gateway", wid_gw, wid_gw, "Gateway",
wid_flags, wid_flags, "Flags", wid_flags, wid_flags, "Flags",
wid_if, wid_if, "Netif", wid_if, wid_if, "Netif",
wid_prepend, "Refcnt"); wid_prepend, "Refcnt");
} }
} }
static void void
nhop_map_update(struct nhop_map *map, uint32_t idx, char *gw, char *ifname) nhop_map_update(struct nhop_map *map, uint32_t idx, char *gw, char *ifname)
{ {
if (idx >= map->size) { if (idx >= map->size) {
uint32_t new_size; uint32_t new_size;
size_t sz; size_t sz;
if (map->size == 0) if (map->size == 0)
new_size = 32; new_size = 32;
else else
▲ Show 20 Lines • Show All 101 Lines • ▼ Show 20 Lines if (Wflag && nh->prepend_len) {
char *prepend_hex = "AABBCCDDEE"; char *prepend_hex = "AABBCCDDEE";
xo_emit(" {:nhop-prepend/%*s}", wid_prepend, prepend_hex); xo_emit(" {:nhop-prepend/%*s}", wid_prepend, prepend_hex);
} }
xo_emit("\n"); xo_emit("\n");
xo_close_instance(name); xo_close_instance(name);
} }
struct nhops_map {
uint32_t idx;
struct rt_msghdr *rtm;
};
static int static int
cmp_nh_idx(const void *_a, const void *_b) cmp_nh_idx(const void *_a, const void *_b)
{ {
const struct nhops_map *a, *b; const struct nhops_map *a, *b;
a = _a; a = _a;
b = _b; b = _b;
if (a->idx > b->idx) if (a->idx > b->idx)
return (1); return (1);
else if (a->idx < b->idx) else if (a->idx < b->idx)
return (-1); return (-1);
return (0); return (0);
} }
static void void
print_nhops_sysctl(int fibnum, int af) dump_nhops_sysctl(int fibnum, int af, struct nhops_dump *nd)
{ {
size_t needed; size_t needed;
int mib[7]; int mib[7];
char *buf, *next, *lim; char *buf, *next, *lim;
struct rt_msghdr *rtm; struct rt_msghdr *rtm;
struct nhop_external *nh; struct nhop_external *nh;
int fam;
struct nhops_map *nh_map; struct nhops_map *nh_map;
size_t nh_count, nh_size; size_t nh_count, nh_size;
mib[0] = CTL_NET; mib[0] = CTL_NET;
mib[1] = PF_ROUTE; mib[1] = PF_ROUTE;
mib[2] = 0; mib[2] = 0;
mib[3] = af; mib[3] = af;
mib[4] = NET_RT_NHOP; mib[4] = NET_RT_NHOP;
mib[5] = 0; mib[5] = 0;
mib[6] = fibnum; mib[6] = fibnum;
if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0) if (sysctl(mib, nitems(mib), NULL, &needed, NULL, 0) < 0)
err(EX_OSERR, "sysctl: net.route.0.%d.nhdump.%d estimate", af, err(EX_OSERR, "sysctl: net.route.0.%d.nhdump.%d estimate", af,
fibnum); fibnum);
if ((buf = malloc(needed)) == NULL) if ((buf = malloc(needed)) == NULL)
errx(2, "malloc(%lu)", (unsigned long)needed); errx(2, "malloc(%lu)", (unsigned long)needed);
if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0) if (sysctl(mib, nitems(mib), buf, &needed, NULL, 0) < 0)
err(1, "sysctl: net.route.0.%d.nhdump.%d", af, fibnum); err(1, "sysctl: net.route.0.%d.nhdump.%d", af, fibnum);
lim = buf + needed; lim = buf + needed;
xo_open_container("nhop-table");
xo_open_list("rt-family");
/* /*
* nexhops are received unsorted. Collect everything first, sort and then display * nexhops are received unsorted. Collect everything first, sort and then display
* sorted. * sorted.
*/ */
nh_count = 0; nh_count = 0;
nh_size = 16; nh_size = 16;
nh_map = calloc(nh_size, sizeof(struct nhops_map)); nh_map = calloc(nh_size, sizeof(struct nhops_map));
for (next = buf; next < lim; next += rtm->rtm_msglen) { for (next = buf; next < lim; next += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)next; rtm = (struct rt_msghdr *)next;
if (rtm->rtm_version != RTM_VERSION) if (rtm->rtm_version != RTM_VERSION)
continue; continue;
if (nh_count >= nh_size) { if (nh_count >= nh_size) {
nh_size *= 2; nh_size *= 2;
nh_map = realloc(nh_map, nh_size * sizeof(struct nhops_map)); nh_map = realloc(nh_map, nh_size * sizeof(struct nhops_map));
} }
nh = (struct nhop_external *)(rtm + 1); nh = (struct nhop_external *)(rtm + 1);
nh_map[nh_count].idx = nh->nh_idx; nh_map[nh_count].idx = nh->nh_idx;
nh_map[nh_count].rtm = rtm; nh_map[nh_count].rtm = rtm;
nh_count++; nh_count++;
} }
if (nh_count > 0) { if (nh_count > 0)
qsort(nh_map, nh_count, sizeof(struct nhops_map), cmp_nh_idx); qsort(nh_map, nh_count, sizeof(struct nhops_map), cmp_nh_idx);
nh = (struct nhop_external *)(nh_map[0].rtm + 1); nd->nh_buf = buf;
nd->nh_count = nh_count;
nd->nh_map = nh_map;
}
static void
print_nhops_sysctl(int fibnum, int af)
{
struct nhops_dump nd;
struct nhop_external *nh;
int fam;
struct rt_msghdr *rtm;
dump_nhops_sysctl(fibnum, af, &nd);
xo_open_container("nhop-table");
xo_open_list("rt-family");
if (nd.nh_count > 0) {
nh = (struct nhop_external *)(nd.nh_map[0].rtm + 1);
fam = nh->nh_family; fam = nh->nh_family;
wid_dst = WID_GW_DEFAULT(fam); wid_dst = WID_GW_DEFAULT(fam);
wid_gw = WID_GW_DEFAULT(fam); wid_gw = WID_GW_DEFAULT(fam);
wid_nhidx = 5; wid_nhidx = 5;
wid_nhtype = 12; wid_nhtype = 12;
wid_refcnt = 6; wid_refcnt = 6;
wid_flags = 6; wid_flags = 6;
wid_pksent = 8; wid_pksent = 8;
wid_mtu = 6; wid_mtu = 6;
wid_if = WID_IF_DEFAULT(fam); wid_if = WID_IF_DEFAULT(fam);
xo_open_instance("rt-family"); xo_open_instance("rt-family");
pr_family(fam); pr_family(fam);
xo_open_list("nh-entry"); xo_open_list("nh-entry");
print_nhop_header(fam); print_nhop_header(fam);
for (size_t i = 0; i < nh_count; i++) { for (size_t i = 0; i < nd.nh_count; i++) {
rtm = nh_map[i].rtm; rtm = nd.nh_map[i].rtm;
nh = (struct nhop_external *)(rtm + 1); nh = (struct nhop_external *)(rtm + 1);
print_nhop_entry_sysctl("nh-entry", rtm, nh); print_nhop_entry_sysctl("nh-entry", rtm, nh);
} }
xo_close_list("nh-entry"); xo_close_list("nh-entry");
xo_close_instance("rt-family"); xo_close_instance("rt-family");
} }
xo_close_list("rt-family"); xo_close_list("rt-family");
xo_close_container("nhop-table"); xo_close_container("nhop-table");
free(buf); free(nd.nh_buf);
} }
static void static void
p_nhflags(int f, const char *format) p_nhflags(int f, const char *format)
{ {
struct bits *p; struct bits *p;
char *pretty_name = "nh_flags_pretty"; char *pretty_name = "nh_flags_pretty";
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