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linprocfs: Migrate to IfAPI

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Summary:
Migrate linprocfs to use the IfAPI interfaces instead of direct ifnet
accesses.

Reviewed by:	dchagin
Sponsored by:	Juniper Networks, Inc.
Differential Revision: https://reviews.freebsd.org/D38358
This commit is contained in:
Justin Hibbits 2023-02-02 16:48:22 -05:00
parent 2eeb808361
commit 5243598927
1 changed files with 64 additions and 43 deletions
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107
sys/compat/linprocfs/linprocfs.c
View File

@ -1474,26 +1474,79 @@ linprocfs_doprocmem(PFS_FILL_ARGS)
return (error);
}
struct linux_ifname_cb_s {
struct ifnet *ifp;
int ethno;
char *buffer;
size_t buflen;
};
static int
linux_ifname_cb(if_t ifp, void *arg)
{
struct linux_ifname_cb_s *cbs = arg;
if (ifp == cbs->ifp)
return (snprintf(cbs->buffer, cbs->buflen, "eth%d", cbs->ethno));
if (!linux_use_real_ifname(ifp))
cbs->ethno++;
return (0);
}
static int
linux_ifname(struct ifnet *ifp, char *buffer, size_t buflen)
{
struct ifnet *ifscan;
int ethno;
struct linux_ifname_cb_s arg;
IFNET_RLOCK_ASSERT();
arg.ifp = ifp;
arg.buffer = buffer;
arg.buflen = buflen;
arg.ethno = 0;
/* Short-circuit non ethernet interfaces */
if (linux_use_real_ifname(ifp))
return (strlcpy(buffer, ifp->if_xname, buflen));
return (strlcpy(buffer, if_name(ifp), buflen));
/* Determine the (relative) unit number for ethernet interfaces */
ethno = 0;
CK_STAILQ_FOREACH(ifscan, &V_ifnet, if_link) {
if (ifscan == ifp)
return (snprintf(buffer, buflen, "eth%d", ethno));
if (!linux_use_real_ifname(ifscan))
ethno++;
}
return (if_foreach(linux_ifname_cb, &arg));
}
static int
linprocfs_donetdev_cb(if_t ifp, void *arg)
{
char ifname[16]; /* XXX LINUX_IFNAMSIZ */
struct sbuf *sb = arg;
linux_ifname(ifp, ifname, sizeof ifname);
sbuf_printf(sb, "%6.6s: ", ifname);
sbuf_printf(sb, "%7ju %7ju %4ju %4ju %4lu %5lu %10lu %9ju ",
(uintmax_t )if_getcounter(ifp, IFCOUNTER_IBYTES),
(uintmax_t )if_getcounter(ifp, IFCOUNTER_IPACKETS),
(uintmax_t )if_getcounter(ifp, IFCOUNTER_IERRORS),
(uintmax_t )if_getcounter(ifp, IFCOUNTER_IQDROPS),
/* rx_missed_errors */
0UL, /* rx_fifo_errors */
0UL, /* rx_length_errors +
* rx_over_errors +
* rx_crc_errors +
* rx_frame_errors */
0UL, /* rx_compressed */
(uintmax_t )if_getcounter(ifp, IFCOUNTER_IMCASTS));
/* XXX-BZ rx only? */
sbuf_printf(sb, "%8ju %7ju %4ju %4ju %4lu %5ju %7lu %10lu\n",
(uintmax_t )if_getcounter(ifp, IFCOUNTER_OBYTES),
(uintmax_t )if_getcounter(ifp, IFCOUNTER_OPACKETS),
(uintmax_t )if_getcounter(ifp, IFCOUNTER_OERRORS),
(uintmax_t )if_getcounter(ifp, IFCOUNTER_OQDROPS),
0UL, /* tx_fifo_errors */
(uintmax_t )if_getcounter(ifp, IFCOUNTER_COLLISIONS),
0UL, /* tx_carrier_errors +
* tx_aborted_errors +
* tx_window_errors +
* tx_heartbeat_errors*/
0UL); /* tx_compressed */
return (0);
}
@ -1504,9 +1557,6 @@ linux_ifname(struct ifnet *ifp, char *buffer, size_t buflen)
static int
linprocfs_donetdev(PFS_FILL_ARGS)
{
char ifname[16]; /* XXX LINUX_IFNAMSIZ */
struct ifnet *ifp;
sbuf_printf(sb, "%6s|%58s|%s\n"
"%6s|%58s|%58s\n",
"Inter-", " Receive", " Transmit",
@ -1516,36 +1566,7 @@ linprocfs_donetdev(PFS_FILL_ARGS)
CURVNET_SET(TD_TO_VNET(curthread));
IFNET_RLOCK();
CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
linux_ifname(ifp, ifname, sizeof ifname);
sbuf_printf(sb, "%6.6s: ", ifname);
sbuf_printf(sb, "%7ju %7ju %4ju %4ju %4lu %5lu %10lu %9ju ",
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IBYTES),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IPACKETS),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IERRORS),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IQDROPS),
/* rx_missed_errors */
0UL, /* rx_fifo_errors */
0UL, /* rx_length_errors +
* rx_over_errors +
* rx_crc_errors +
* rx_frame_errors */
0UL, /* rx_compressed */
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_IMCASTS));
/* XXX-BZ rx only? */
sbuf_printf(sb, "%8ju %7ju %4ju %4ju %4lu %5ju %7lu %10lu\n",
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OBYTES),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OPACKETS),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OERRORS),
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_OQDROPS),
0UL, /* tx_fifo_errors */
(uintmax_t )ifp->if_get_counter(ifp, IFCOUNTER_COLLISIONS),
0UL, /* tx_carrier_errors +
* tx_aborted_errors +
* tx_window_errors +
* tx_heartbeat_errors*/
0UL); /* tx_compressed */
}
if_foreach(linprocfs_donetdev_cb, sb);
IFNET_RUNLOCK();
CURVNET_RESTORE();