Author: mr Date: Sat Jul 11 13:56:36 2020 New Revision: 363095 URL: https://svnweb.freebsd.org/changeset/base/363095
Log: Handle device removal and removal+add cases to fix infinity rate. PR: 219829 Submitted by: o...@j.email.ne.jp Reported by: r...@live.cn MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D25226 Modified: head/usr.bin/systat/ifcmds.c head/usr.bin/systat/ifstat.c head/usr.bin/systat/systat.1 Modified: head/usr.bin/systat/ifcmds.c ============================================================================== --- head/usr.bin/systat/ifcmds.c Sat Jul 11 13:11:54 2020 (r363094) +++ head/usr.bin/systat/ifcmds.c Sat Jul 11 13:56:36 2020 (r363095) @@ -74,6 +74,8 @@ ifcmd(const char *cmd, const char *args) } } else if (prefix(cmd, "pps")) showpps = !showpps; + else + return (0); return (1); } Modified: head/usr.bin/systat/ifstat.c ============================================================================== --- head/usr.bin/systat/ifstat.c Sat Jul 11 13:11:54 2020 (r363094) +++ head/usr.bin/systat/ifstat.c Sat Jul 11 13:56:36 2020 (r363095) @@ -37,6 +37,7 @@ #include <net/if.h> #include <net/if_mib.h> +#include <stdbool.h> #include <stdlib.h> #include <string.h> #include <err.h> @@ -67,7 +68,8 @@ SLIST_HEAD(, if_stat_disp) displist; struct if_stat { SLIST_ENTRY(if_stat) link; - char if_name[IF_NAMESIZE]; + char display_name[IF_NAMESIZE]; + char dev_name[IFNAMSIZ]; /* copied from ifmibdata */ struct ifmibdata if_mib; struct timeval tv; struct timeval tv_lastchanged; @@ -81,7 +83,7 @@ struct if_stat { uint64_t if_out_pps_peak; u_int if_row; /* Index into ifmib sysctl */ int if_ypos; /* -1 if not being displayed */ - u_int display; + bool display; u_int match; }; @@ -91,11 +93,13 @@ extern int showpps; extern int needsort; static int needclear = 0; +static bool displayall = false; -static void right_align_string(struct if_stat *); -static void getifmibdata(const int, struct ifmibdata *); +static void format_device_name(struct if_stat *); +static int getifmibdata(const int, struct ifmibdata *); static void sort_interface_list(void); static u_int getifnum(void); +static void clearifstat(void); #define IFSTAT_ERR(n, s) do { \ putchar('\014'); \ @@ -165,7 +169,7 @@ static u_int getifnum(void); } while (0) #define PUTNAME(p) do { \ - mvprintw(p->if_ypos, 0, "%s", p->if_name); \ + mvprintw(p->if_ypos, 0, "%s", p->display_name); \ mvprintw(p->if_ypos, col2-3, "%s", (const char *)"in"); \ mvprintw(p->if_ypos+1, col2-3, "%s", (const char *)"out"); \ } while (0) @@ -214,7 +218,7 @@ showifstat(void) SLIST_FOREACH(ifp, &curlist, link) { if (ifp->if_ypos < LINES - 3 && ifp->if_ypos != -1) - if (ifp->display == 0 || ifp->match == 0) { + if (!ifp->display || ifp->match == 0) { wmove(wnd, ifp->if_ypos, 0); wclrtoeol(wnd); wmove(wnd, ifp->if_ypos + 1, 0); @@ -235,7 +239,7 @@ int initifstat(void) { struct if_stat *p = NULL; - u_int n = 0, i = 0; + u_int n, i; n = getifnum(); if (n <= 0) @@ -247,18 +251,21 @@ initifstat(void) p = (struct if_stat *)calloc(1, sizeof(struct if_stat)); if (p == NULL) IFSTAT_ERR(1, "out of memory"); - SLIST_INSERT_HEAD(&curlist, p, link); p->if_row = i+1; - getifmibdata(p->if_row, &p->if_mib); - right_align_string(p); + if (getifmibdata(p->if_row, &p->if_mib) == -1) { + free(p); + continue; + } + SLIST_INSERT_HEAD(&curlist, p, link); + format_device_name(p); p->match = 1; /* * Initially, we only display interfaces that have - * received some traffic. + * received some traffic unless display-all is on. */ - if (p->if_mib.ifmd_data.ifi_ibytes != 0) - p->display = 1; + if (displayall || p->if_mib.ifmd_data.ifi_ibytes != 0) + p->display = true; } sort_interface_list(); @@ -269,13 +276,13 @@ initifstat(void) void fetchifstat(void) { - struct if_stat *ifp = NULL; + struct if_stat *ifp = NULL, *temp_var; struct timeval tv, new_tv, old_tv; double elapsed = 0.0; uint64_t new_inb, new_outb, old_inb, old_outb = 0; uint64_t new_inp, new_outp, old_inp, old_outp = 0; - SLIST_FOREACH(ifp, &curlist, link) { + SLIST_FOREACH_SAFE(ifp, &curlist, link, temp_var) { /* * Grab a copy of the old input/output values before we * call getifmibdata(). @@ -287,7 +294,22 @@ fetchifstat(void) ifp->tv_lastchanged = ifp->if_mib.ifmd_data.ifi_lastchange; (void)gettimeofday(&new_tv, NULL); - (void)getifmibdata(ifp->if_row, &ifp->if_mib); + if (getifmibdata(ifp->if_row, &ifp->if_mib) == -1 ) { + /* if a device was removed */ + SLIST_REMOVE(&curlist, ifp, if_stat, link); + free(ifp); + needsort = 1; + clearifstat(); + } else if (strcmp(ifp->dev_name, ifp->if_mib.ifmd_name) != 0 ) { + /* a device was removed and another one was added */ + format_device_name(ifp); + /* clear to the current value for the new device */ + old_inb = ifp->if_mib.ifmd_data.ifi_ibytes; + old_outb = ifp->if_mib.ifmd_data.ifi_obytes; + old_inp = ifp->if_mib.ifmd_data.ifi_ipackets; + old_outp = ifp->if_mib.ifmd_data.ifi_opackets; + needsort = 1; + } new_inb = ifp->if_mib.ifmd_data.ifi_ibytes; new_outb = ifp->if_mib.ifmd_data.ifi_obytes; @@ -295,8 +317,8 @@ fetchifstat(void) new_outp = ifp->if_mib.ifmd_data.ifi_opackets; /* Display interface if it's received some traffic. */ - if (new_inb > 0 && old_inb == 0) { - ifp->display = 1; + if (!ifp->display && new_inb > 0 && old_inb == 0) { + ifp->display = true; needsort = 1; } @@ -351,28 +373,18 @@ fetchifstat(void) /* * We want to right justify our interface names against the first column * (first sixteen or so characters), so we need to do some alignment. + * We save original name so that we can find a same spot is take by a + * different device. */ static void -right_align_string(struct if_stat *ifp) +format_device_name(struct if_stat *ifp) { - int str_len = 0, pad_len = 0; - char *newstr = NULL, *ptr = NULL; - if (ifp == NULL || ifp->if_mib.ifmd_name == NULL) - return; - else { - /* string length + '\0' */ - str_len = strlen(ifp->if_mib.ifmd_name)+1; - pad_len = IF_NAMESIZE-(str_len); - - newstr = ifp->if_name; - ptr = newstr + pad_len; - (void)memset((void *)newstr, (int)' ', IF_NAMESIZE); - (void)strncpy(ptr, (const char *)&ifp->if_mib.ifmd_name, - str_len); + if (ifp != NULL ) { + snprintf(ifp->display_name, IF_NAMESIZE, "%*s", IF_NAMESIZE-1, + ifp->if_mib.ifmd_name); + strcpy(ifp->dev_name, ifp->if_mib.ifmd_name); } - - return; } static int @@ -461,9 +473,10 @@ getifnum(void) return (data); } -static void +static int getifmibdata(int row, struct ifmibdata *data) { + int ret = 0; size_t datalen = 0; static int name[] = { CTL_NET, PF_LINK, @@ -474,9 +487,12 @@ getifmibdata(int row, struct ifmibdata *data) datalen = sizeof(*data); name[4] = row; - if ((sysctl(name, 6, (void *)data, (size_t *)&datalen, (void *)NULL, - (size_t)0) != 0) && (errno != ENOENT)) + ret = sysctl(name, 6, (void *)data, (size_t *)&datalen, (void *)NULL, + (size_t)0); + if ((ret != 0) && (errno != ENOENT)) IFSTAT_ERR(2, "sysctl error getting interface data"); + + return (ret); } int @@ -487,13 +503,23 @@ cmdifstat(const char *cmd, const char *args) retval = ifcmd(cmd, args); /* ifcmd() returns 1 on success */ if (retval == 1) { - if (needclear) { - showifstat(); - refresh(); - werase(wnd); - labelifstat(); - needclear = 0; - } + if (needclear) + clearifstat(); } + else if (prefix(cmd, "all")) { + retval = 1; + displayall = true; + } return (retval); +} + +static void +clearifstat(void) +{ + + showifstat(); + refresh(); + werase(wnd); + labelifstat(); + needclear = 0; } Modified: head/usr.bin/systat/systat.1 ============================================================================== --- head/usr.bin/systat/systat.1 Sat Jul 11 13:11:54 2020 (r363094) +++ head/usr.bin/systat/systat.1 Sat Jul 11 13:56:36 2020 (r363095) @@ -680,6 +680,7 @@ in Silicon Graphics' system. .Sh BUGS Certain displays presume a minimum of 80 characters per line. +Ifstat does not detect new interfaces. The .Ic vmstat display looks out of place because it is (it was added in as _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
