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Fix up the long mbuf chain recovery code to use m_defrag; the old

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code messed up on B & C chipsets because it lost the packet header
and therefore the flag indicating the need for hardware checksums.

MFC after:	2 weeks
This commit is contained in:
Mike Silbersack 2003-03-29 06:34:25 +00:00
parent 9f6d45b1a4
commit cb3b23ef1e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=112779
1 changed files with 8 additions and 19 deletions
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27
sys/pci/if_xl.c
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@ -2412,9 +2412,8 @@ xl_encap(sc, c, m_head)
struct xl_chain *c;
struct mbuf *m_head;
{
struct xl_frag *f = NULL;
int error;
u_int32_t baddr, status;
u_int32_t status;
/*
* Start packing the mbufs in this chain into
@ -2441,33 +2440,23 @@ xl_encap(sc, c, m_head)
if (error) {
struct mbuf *m_new;
m_new = m_head->m_pkthdr.len > MHLEN ?
m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR) :
m_gethdr(M_DONTWAIT, MT_DATA);
m_new = m_defrag(m_head, M_DONTWAIT);
if (m_new == NULL) {
m_freem(m_head);
printf("xl%d: no memory for tx list\n", sc->xl_unit);
return(1);
} else {
m_head = m_new;
}
m_copydata(m_head, 0, m_head->m_pkthdr.len,
mtod(m_new, caddr_t));
m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len;
m_freem(m_head);
m_head = m_new;
f = &c->xl_ptr->xl_frag[0];
error = bus_dmamap_load(sc->xl_mtag, c->xl_map,
mtod(m_new, void *), MCLBYTES, xl_dma_map_addr,
&baddr, 0);
error = bus_dmamap_load_mbuf(sc->xl_mtag, c->xl_map,
m_head, xl_dma_map_txbuf, c->xl_ptr, 0);
if (error) {
m_freem(m_new);
m_freem(m_head);
printf("xl%d: can't map mbuf (error %d)\n",
sc->xl_unit, error);
return(1);
}
f->xl_addr = htole32(baddr);
f->xl_len = htole32(m_new->m_len | XL_LAST_FRAG);
c->xl_ptr->xl_status = htole32(m_new->m_len);
c->xl_ptr->xl_next = 0;
}
if (sc->xl_type == XL_TYPE_905B) {