Date: Fri, 8 Jul 2016 15:43:28 GMT From: vincenzo@FreeBSD.org To: svn-soc-all@FreeBSD.org Subject: socsvn commit: r305823 - soc2016/vincenzo/head/sys/dev/netmap Message-ID: <201607081543.u68FhS5a007068@socsvn.freebsd.org>
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Author: vincenzo Date: Fri Jul 8 15:43:27 2016 New Revision: 305823 URL: http://svnweb.FreeBSD.org/socsvn/?view=rev&rev=305823 Log: freebsd: ptnet_rx_eof: simplify budget management and debug prints Modified: soc2016/vincenzo/head/sys/dev/netmap/if_ptnet.c Modified: soc2016/vincenzo/head/sys/dev/netmap/if_ptnet.c ============================================================================== --- soc2016/vincenzo/head/sys/dev/netmap/if_ptnet.c Fri Jul 8 15:43:19 2016 (r305822) +++ soc2016/vincenzo/head/sys/dev/netmap/if_ptnet.c Fri Jul 8 15:43:27 2016 (r305823) @@ -1549,18 +1549,13 @@ kring->nr_kflags &= ~NKR_PENDINTR; - for (;;) { + do { unsigned int prev_head = head; struct mbuf *mhead, *mtail; struct netmap_slot *slot; unsigned int nmbuf_len; uint8_t *nmbuf, *mdata; - if (budget == 0) { - RD(1, "Run out of budget h %u t %u", head, ring->tail); - break; - } - if (head == ring->tail) { /* We ran out of slot, let's see if the host has * added some, by reading hwcur and hwtail from @@ -1682,8 +1677,7 @@ (*ifp->if_input)(ifp, mhead); PTNET_Q_LOCK(pq); - budget--; - } + } while (--budget); escape: if (head != ring->head) { /* Some packets have been pushed to the network stack. @@ -1707,8 +1701,8 @@ if (!budget) { /* If we ran out of budget or the double-check found new * slots to process, schedule the taskqueue. */ - RD(1, "%s: resched: budget %u h %u t %u\n", __func__, - budget, head, ring->tail); + RD(1, "out of budget: resched h %u t %u\n", + head, ring->tail); taskqueue_enqueue(pq->taskq, &pq->task); } }
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