merge in 2 buf_ring helper routines for enqueueing and freeing buf_rings
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096f3ce0c9
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1635d9171c
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=186207
@ -77,6 +77,7 @@ struct ifvlantrunk;
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#ifdef _KERNEL
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#include <sys/mbuf.h>
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#include <sys/eventhandler.h>
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#include <sys/buf_ring.h>
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#endif /* _KERNEL */
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#include <sys/lock.h> /* XXX */
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#include <sys/mutex.h> /* XXX */
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@ -548,6 +549,32 @@ do { \
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IFQ_PURGE(ifq); \
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} while (0)
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#ifdef _KERNEL
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static __inline int
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drbr_enqueue(struct buf_ring *br, struct mbuf *m)
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{
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int error = 0;
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if ((error = buf_ring_enqueue(br, m)) == ENOBUFS) {
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br->br_drops++;
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m_freem(m);
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}
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return (error);
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}
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static __inline void
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drbr_free(struct buf_ring *br, struct malloc_type *type)
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{
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struct mbuf *m;
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while ((m = buf_ring_dequeue_sc(br)) != NULL)
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m_freem(m);
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buf_ring_free(br, type);
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}
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#endif
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/*
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* 72 was chosen below because it is the size of a TCP/IP
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* header (40) + the minimum mss (32).
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@ -48,10 +48,11 @@ struct buf_ring {
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volatile uint32_t br_prod_tail;
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int br_prod_size;
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int br_prod_mask;
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uint64_t br_drops;
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/*
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* Pad out to next L2 cache line
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*/
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uint64_t _pad0[14];
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uint64_t _pad0[13];
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volatile uint32_t br_cons_head;
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volatile uint32_t br_cons_tail;
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