1 #ifndef lint 2 static char sccsid[] = "@(#)mbuf.c 4.5 82/12/18"; 3 #endif 4 5 #include <sys/param.h> 6 #include <sys/mbuf.h> 7 8 struct mbstat mbstat; 9 extern int kmem; 10 11 static struct mbtypes { 12 int mt_type; 13 char *mt_name; 14 } mbtypes[] = { 15 { MT_DATA, "data" }, 16 { MT_HEADER, "packet headers" }, 17 { MT_SOCKET, "socket structures" }, 18 { MT_PCB, "protocol control blocks" }, 19 { MT_RTABLE, "routing table entries" }, 20 { MT_HTABLE, "IMP host table entries" }, 21 #ifdef notdef 22 { MT_ATABLE, "address resolution tables" }, 23 #endif 24 { MT_FTABLE, "fragment reassembly queue headers" }, 25 { MT_SONAME, "socket names and addresses" }, 26 { MT_ZOMBIE, "zombie process information" }, 27 { MT_SOOPTS, "socket options" }, 28 { 0, 0 } 29 }; 30 31 /* 32 * Print mbuf statistics. 33 */ 34 mbpr(mbaddr) 35 off_t mbaddr; 36 { 37 register int totmem, totfree, totmbufs; 38 register struct mbtypes *mp; 39 40 if (mbaddr == 0) { 41 printf("mbstat: symbol not in namelist\n"); 42 return; 43 } 44 klseek(kmem, mbaddr, 0); 45 if (read(kmem, &mbstat, sizeof (mbstat)) != sizeof (mbstat)) { 46 printf("mbstat: bad read\n"); 47 return; 48 } 49 printf("%d/%d mbufs in use:\n", 50 mbstat.m_mbufs - mbstat.m_mbfree, mbstat.m_mbufs); 51 totmbufs = 0; 52 for (mp = mbtypes; mp->mt_name; mp++) 53 if (mbstat.m_mtypes[mp->mt_type]) { 54 printf("\t%d mbufs allocated to %s\n", 55 mbstat.m_mtypes[mp->mt_type], mp->mt_name); 56 totmbufs += mbstat.m_mtypes[mp->mt_type]; 57 } 58 if (totmbufs != mbstat.m_mbufs - mbstat.m_mbfree) 59 printf("*** %d mbufs missing ***\n", 60 (mbstat.m_mbufs - mbstat.m_mbfree) - totmbufs); 61 printf("%d/%d mapped pages in use\n", 62 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters); 63 totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * CLBYTES; 64 totfree = mbstat.m_mbfree * MSIZE + mbstat.m_clusters * CLBYTES; 65 printf("%d Kbytes allocated to network (%d%% in use)\n", 66 totmem / 1024, (totmem - totfree) * 100 / totmem); 67 printf("%d requests for memory denied\n", mbstat.m_drops); 68 } 69