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Slight restructure of iflib_busdma_load_mbuf_sg() to fix accounting

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when m_collapse() fails.

Submitted by:	krzystof.galazka@intel.com
Reviewed by:	Jeb Cramer <cramerj@intel.com>
Sponsored by:	Intel Corporation
Differential Revision:	https://reviews.freebsd.org/D11476
This commit is contained in:
Sean Bruno 2017-07-27 22:53:47 +00:00
parent 9bc7588cb6
commit 9d35858f48
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=321630
1 changed files with 2 additions and 2 deletions
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4
sys/net/iflib.c
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@ -2975,6 +2975,8 @@ iflib_busdma_load_mbuf_sg(iflib_txq_t txq, bus_dma_tag_t tag, bus_dmamap_t map,
#endif
ifsd_m[next] = m;
while (buflen > 0) {
if (i >= max_segs)
goto err;
max_sgsize = MIN(buflen, maxsegsz);
curaddr = pmap_kextract(vaddr);
sgsize = PAGE_SIZE - (curaddr & PAGE_MASK);
@ -2984,8 +2986,6 @@ iflib_busdma_load_mbuf_sg(iflib_txq_t txq, bus_dma_tag_t tag, bus_dmamap_t map,
vaddr += sgsize;
buflen -= sgsize;
i++;
if (i >= max_segs)
goto err;
}
count++;
tmp = m;