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author | Yangbo Lu <yangbo.lu@nxp.com> | 2020-04-10 10:47:05 +0800 |
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committer | Petr Štetiar <ynezz@true.cz> | 2020-05-07 12:53:06 +0200 |
commit | cddd4591404fb4c53dc0b3c0b15b942cdbed4356 (patch) | |
tree | 392c1179de46b0f804e3789edca19069b64e6b44 /target/linux/layerscape/patches-5.4/303-core-0001-net-readd-skb_recycle.patch | |
parent | d1d2c0b5579ea4f69a42246c9318539d61ba1999 (diff) | |
download | upstream-cddd4591404fb4c53dc0b3c0b15b942cdbed4356.tar.gz upstream-cddd4591404fb4c53dc0b3c0b15b942cdbed4356.tar.bz2 upstream-cddd4591404fb4c53dc0b3c0b15b942cdbed4356.zip |
layerscape: add patches-5.4
Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/
For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.
The patches are sorted into the following categories:
301-arch-xxxx
302-dts-xxxx
303-core-xxxx
701-net-xxxx
801-audio-xxxx
802-can-xxxx
803-clock-xxxx
804-crypto-xxxx
805-display-xxxx
806-dma-xxxx
807-gpio-xxxx
808-i2c-xxxx
809-jailhouse-xxxx
810-keys-xxxx
811-kvm-xxxx
812-pcie-xxxx
813-pm-xxxx
814-qe-xxxx
815-sata-xxxx
816-sdhc-xxxx
817-spi-xxxx
818-thermal-xxxx
819-uart-xxxx
820-usb-xxxx
821-vfio-xxxx
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Diffstat (limited to 'target/linux/layerscape/patches-5.4/303-core-0001-net-readd-skb_recycle.patch')
-rw-r--r-- | target/linux/layerscape/patches-5.4/303-core-0001-net-readd-skb_recycle.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/303-core-0001-net-readd-skb_recycle.patch b/target/linux/layerscape/patches-5.4/303-core-0001-net-readd-skb_recycle.patch new file mode 100644 index 0000000000..cd52f66084 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/303-core-0001-net-readd-skb_recycle.patch @@ -0,0 +1,59 @@ +From 446a17652a69f749dd7a50b28e984c4904dc3aaf Mon Sep 17 00:00:00 2001 +From: Madalin Bucur <madalin.bucur@freescale.com> +Date: Tue, 5 Jan 2016 12:12:07 +0200 +Subject: [PATCH] net: readd skb_recycle() + +Adding back skb_recycle() as it's used by the DPAA Ethernet driver. +This was removed from the upstream kernel because it was lacking users. + +Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com> +--- + include/linux/skbuff.h | 1 + + net/core/skbuff.c | 26 ++++++++++++++++++++++++++ + 2 files changed, 27 insertions(+) + +--- a/include/linux/skbuff.h ++++ b/include/linux/skbuff.h +@@ -1025,6 +1025,7 @@ void skb_dump(const char *level, const s + void skb_tx_error(struct sk_buff *skb); + void consume_skb(struct sk_buff *skb); + void __consume_stateless_skb(struct sk_buff *skb); ++void skb_recycle(struct sk_buff *skb); + void __kfree_skb(struct sk_buff *skb); + extern struct kmem_cache *skbuff_head_cache; + +--- a/net/core/skbuff.c ++++ b/net/core/skbuff.c +@@ -936,6 +936,32 @@ void napi_consume_skb(struct sk_buff *sk + } + EXPORT_SYMBOL(napi_consume_skb); + ++/** ++ * skb_recycle - clean up an skb for reuse ++ * @skb: buffer ++ * ++ * Recycles the skb to be reused as a receive buffer. This ++ * function does any necessary reference count dropping, and ++ * cleans up the skbuff as if it just came from __alloc_skb(). ++ */ ++void skb_recycle(struct sk_buff *skb) ++{ ++ struct skb_shared_info *shinfo; ++ u8 head_frag = skb->head_frag; ++ ++ skb_release_head_state(skb); ++ ++ shinfo = skb_shinfo(skb); ++ memset(shinfo, 0, offsetof(struct skb_shared_info, dataref)); ++ atomic_set(&shinfo->dataref, 1); ++ ++ memset(skb, 0, offsetof(struct sk_buff, tail)); ++ skb->data = skb->head + NET_SKB_PAD; ++ skb->head_frag = head_frag; ++ skb_reset_tail_pointer(skb); ++} ++EXPORT_SYMBOL(skb_recycle); ++ + /* Make sure a field is enclosed inside headers_start/headers_end section */ + #define CHECK_SKB_FIELD(field) \ + BUILD_BUG_ON(offsetof(struct sk_buff, field) < \ |