Date: Fri, 5 Dec 2008 21:16:13 +0000 (UTC) From: Kip Macy <kmacy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r185649 - in user/kmacy/HEAD_fast_multi_xmit/sys: net sys Message-ID: <200812052116.mB5LGDDr073309@svn.freebsd.org>
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Author: kmacy Date: Fri Dec 5 21:16:13 2008 New Revision: 185649 URL: http://svn.freebsd.org/changeset/base/185649 Log: add inline helper functions for buf_ring enqueue and free Modified: user/kmacy/HEAD_fast_multi_xmit/sys/net/if_var.h user/kmacy/HEAD_fast_multi_xmit/sys/sys/buf_ring.h Modified: user/kmacy/HEAD_fast_multi_xmit/sys/net/if_var.h ============================================================================== --- user/kmacy/HEAD_fast_multi_xmit/sys/net/if_var.h Fri Dec 5 21:14:30 2008 (r185648) +++ user/kmacy/HEAD_fast_multi_xmit/sys/net/if_var.h Fri Dec 5 21:16:13 2008 (r185649) @@ -82,6 +82,7 @@ struct ifvlantrunk; #include <sys/mutex.h> /* XXX */ #include <sys/event.h> /* XXX */ #include <sys/_task.h> +#include <sys/buf_ring.h> #define IF_DUNIT_NONE -1 @@ -540,6 +541,34 @@ do { \ IFQ_PURGE(ifq); \ } while (0) + +static __inline int +drbr_enqueue(struct buf_ring *br, struct mbuf *m) +{ + int error = 0; + + if ((error = buf_ring_enqueue(br, m)) == ENOBUFS) { + br->br_drops++; + m_freem(m); + } + + return (error); +} + +static __inline void +drbr_free(struct buf_ring *br, struct malloc_type *type) +{ + struct mbuf *m; + + while ((m = buf_ring_dequeue_sc(br)) != NULL) + m_freem(m); + + buf_ring_free(br, type); +} + + + + /* * 72 was chosen below because it is the size of a TCP/IP * header (40) + the minimum mss (32). Modified: user/kmacy/HEAD_fast_multi_xmit/sys/sys/buf_ring.h ============================================================================== --- user/kmacy/HEAD_fast_multi_xmit/sys/sys/buf_ring.h Fri Dec 5 21:14:30 2008 (r185648) +++ user/kmacy/HEAD_fast_multi_xmit/sys/sys/buf_ring.h Fri Dec 5 21:16:13 2008 (r185649) @@ -48,10 +48,11 @@ struct buf_ring { volatile uint32_t br_prod_tail; int br_prod_size; int br_prod_mask; + uint64_t br_drops; /* * Pad out to next L2 cache line */ - uint64_t _pad0[14]; + uint64_t _pad0[13]; volatile uint32_t br_cons_head; volatile uint32_t br_cons_tail;
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