#include #include #include #include #include /* Calculate expected number of TX descriptors */ int tso_count_descs(struct sk_buff *skb) { /* The Marvell Way */ return skb_shinfo(skb)->gso_segs * 2 + skb_shinfo(skb)->nr_frags; } EXPORT_SYMBOL(tso_count_descs); void tso_build_hdr(struct sk_buff *skb, char *hdr, struct tso_t *tso, int size, bool is_last) { struct tcphdr *tcph; int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); int mac_hdr_len = skb_network_offset(skb); memcpy(hdr, skb->data, hdr_len); if (!tso->ipv6) { struct iphdr *iph = (void *)(hdr + mac_hdr_len); iph->id = htons(tso->ip_id); iph->tot_len = htons(size + hdr_len - mac_hdr_len); tso->ip_id++; } else { struct ipv6hdr *iph = (void *)(hdr + mac_hdr_len); iph->payload_len = htons(size + tcp_hdrlen(skb)); } tcph = (struct tcphdr *)(hdr + skb_transport_offset(skb)); put_unaligned_be32(tso->tcp_seq, &tcph->seq); if (!is_last) { /* Clear all special flags for not last packet */ tcph->psh = 0; tcph->fin = 0; tcph->rst = 0; } } EXPORT_SYMBOL(tso_build_hdr); void tso_build_data(struct sk_buff *skb, struct tso_t *tso, int size) { tso->tcp_seq += size; tso->size -= size; tso->data += size; if ((tso->size == 0) && (tso->next_frag_idx < skb_shinfo(skb)->nr_frags)) { skb_frag_t *frag = &skb_shinfo(skb)->frags[tso->next_frag_idx]; /* Move to next segment */ tso->size = frag->size; tso->data = page_address(frag->page.p) + frag->page_offset; tso->next_frag_idx++; } } EXPORT_SYMBOL(tso_build_data); void tso_start(struct sk_buff *skb, struct tso_t *tso) { int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); tso->ip_id = ntohs(ip_hdr(skb)->id); tso->tcp_seq = ntohl(tcp_hdr(skb)->seq); tso->next_frag_idx = 0; tso->ipv6 = vlan_get_protocol(skb) == htons(ETH_P_IPV6); /* Build first data */ tso->size = skb_headlen(skb) - hdr_len; tso->data = skb->data + hdr_len; if ((tso->size == 0) && (tso->next_frag_idx < skb_shinfo(skb)->nr_frags)) { skb_frag_t *frag = &skb_shinfo(skb)->frags[tso->next_frag_idx]; /* Move to next segment */ tso->size = frag->size; tso->data = page_address(frag->page.p) + frag->page_offset; tso->next_frag_idx++; } } EXPORT_SYMBOL(tso_start); ='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/nfc/Kconfig'>
path: root/net/nfc/Kconfig
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authorDaniel Vetter <daniel.vetter@ffwll.ch>2016-12-18 14:35:45 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-30 10:17:17 +0100
commit4e5b54f127426c82dc2816340c26d951a5bb3429 (patch)
treecc3a8f7e335cf12880bc8d1a1e2066f6cfe0a68e /net/nfc/Kconfig
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
drm: prevent double-(un)registration for connectors
If we're unlucky then the registration from a hotplugged connector might race with the final registration step on driver load. And since MST topology discover is asynchronous that's even somewhat likely. v2: Also update the kerneldoc for @registered! v3: Review from Chris: - Improve kerneldoc for late_register/early_unregister callbacks. - Use mutex_destroy. Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Sean Paul <seanpaul@chromium.org> Reported-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161218133545.2106-1-daniel.vetter@ffwll.ch (cherry picked from commit e73ab00e9a0f1731f34d0620a9c55f5c30c4ad4e)
Diffstat (limited to 'net/nfc/Kconfig')