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-rw-r--r--backport/compat/compat-3.9.c238
1 files changed, 0 insertions, 238 deletions
diff --git a/backport/compat/compat-3.9.c b/backport/compat/compat-3.9.c
deleted file mode 100644
index 93889b55..00000000
--- a/backport/compat/compat-3.9.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/*
- * Copyright (c) 2013 Luis R. Rodriguez <mcgrof@do-not-panic.com>
- *
- * Backport functionality introduced in Linux 3.9.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/netdevice.h>
-#include <linux/if.h>
-#include <linux/if_ether.h>
-#include <linux/etherdevice.h>
-#include <linux/scatterlist.h>
-#include <linux/highmem.h>
-#include <net/inet_frag.h>
-#include <net/sock.h>
-
-void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res)
-{
- void __iomem *dest_ptr;
-
- dest_ptr = devm_ioremap_resource(dev, res);
- if (!dest_ptr)
- return (void __iomem *)ERR_PTR(-ENOMEM);
- return dest_ptr;
-}
-EXPORT_SYMBOL_GPL(devm_ioremap_resource);
-
-/**
- * eth_prepare_mac_addr_change - prepare for mac change
- * @dev: network device
- * @p: socket address
- */
-int eth_prepare_mac_addr_change(struct net_device *dev, void *p)
-{
- struct sockaddr *addr = p;
-
- if (!(dev->priv_flags & IFF_LIVE_ADDR_CHANGE) && netif_running(dev))
- return -EBUSY;
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
- return 0;
-}
-EXPORT_SYMBOL_GPL(eth_prepare_mac_addr_change);
-
-/**
- * eth_commit_mac_addr_change - commit mac change
- * @dev: network device
- * @p: socket address
- */
-void eth_commit_mac_addr_change(struct net_device *dev, void *p)
-{
- struct sockaddr *addr = p;
-
- memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
-}
-EXPORT_SYMBOL_GPL(eth_commit_mac_addr_change);
-
-void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q,
- const char *prefix)
-{
- static const char msg[] = "inet_frag_find: Fragment hash bucket"
- " list length grew over limit " __stringify(INETFRAGS_MAXDEPTH)
- ". Dropping fragment.\n";
-
- if (PTR_ERR(q) == -ENOBUFS)
- LIMIT_NETDEBUG(KERN_WARNING "%s%s", prefix, msg);
-}
-EXPORT_SYMBOL_GPL(inet_frag_maybe_warn_overflow);
-
-void __sg_page_iter_start(struct sg_page_iter *piter,
- struct scatterlist *sglist, unsigned int nents,
- unsigned long pgoffset)
-{
- piter->__pg_advance = 0;
- piter->__nents = nents;
-
- piter->page = NULL;
- piter->sg = sglist;
- piter->sg_pgoffset = pgoffset;
-}
-EXPORT_SYMBOL_GPL(__sg_page_iter_start);
-
-static int sg_page_count(struct scatterlist *sg)
-{
- return PAGE_ALIGN(sg->offset + sg->length) >> PAGE_SHIFT;
-}
-
-bool __sg_page_iter_next(struct sg_page_iter *piter)
-{
- if (!piter->__nents || !piter->sg)
- return false;
-
- piter->sg_pgoffset += piter->__pg_advance;
- piter->__pg_advance = 1;
-
- while (piter->sg_pgoffset >= sg_page_count(piter->sg)) {
- piter->sg_pgoffset -= sg_page_count(piter->sg);
- piter->sg = sg_next(piter->sg);
- if (!--piter->__nents || !piter->sg)
- return false;
- }
- piter->page = nth_page(sg_page(piter->sg), piter->sg_pgoffset);
-
- return true;
-}
-EXPORT_SYMBOL_GPL(__sg_page_iter_next);
-
-static bool sg_miter_get_next_page(struct sg_mapping_iter *miter)
-{
- if (!miter->__remaining) {
- struct scatterlist *sg;
- unsigned long pgoffset;
-
- if (!__sg_page_iter_next(&miter->piter))
- return false;
-
- sg = miter->piter.sg;
- pgoffset = miter->piter.sg_pgoffset;
-
- miter->__offset = pgoffset ? 0 : sg->offset;
- miter->__remaining = sg->offset + sg->length -
- (pgoffset << PAGE_SHIFT) - miter->__offset;
- miter->__remaining = min_t(unsigned long, miter->__remaining,
- PAGE_SIZE - miter->__offset);
- }
-
- return true;
-}
-
-/**
- * sg_miter_start - start mapping iteration over a sg list
- * @miter: sg mapping iter to be started
- * @sgl: sg list to iterate over
- * @nents: number of sg entries
- *
- * Description:
- * Starts mapping iterator @miter.
- *
- * Context:
- * Don't care.
- */
-void backport_sg_miter_start(struct sg_mapping_iter *miter, struct scatterlist *sgl,
- unsigned int nents, unsigned int flags)
-{
- memset(miter, 0, sizeof(struct sg_mapping_iter));
-
- __sg_page_iter_start(&miter->piter, sgl, nents, 0);
- WARN_ON(!(flags & (SG_MITER_TO_SG | SG_MITER_FROM_SG)));
- miter->__flags = flags;
-}
-EXPORT_SYMBOL_GPL(backport_sg_miter_start);
-
-/**
- * sg_miter_next - proceed mapping iterator to the next mapping
- * @miter: sg mapping iter to proceed
- *
- * Description:
- * Proceeds @miter to the next mapping. @miter should have been started
- * using sg_miter_start(). On successful return, @miter->page,
- * @miter->addr and @miter->length point to the current mapping.
- *
- * Context:
- * Preemption disabled if SG_MITER_ATOMIC. Preemption must stay disabled
- * till @miter is stopped. May sleep if !SG_MITER_ATOMIC.
- *
- * Returns:
- * true if @miter contains the next mapping. false if end of sg
- * list is reached.
- */
-bool backport_sg_miter_next(struct sg_mapping_iter *miter)
-{
- sg_miter_stop(miter);
-
- /*
- * Get to the next page if necessary.
- * __remaining, __offset is adjusted by sg_miter_stop
- */
- if (!sg_miter_get_next_page(miter))
- return false;
-
- miter->page = sg_page_iter_page(&miter->piter);
- miter->consumed = miter->length = miter->__remaining;
-
- if (miter->__flags & SG_MITER_ATOMIC)
- miter->addr = kmap_atomic(miter->page) + miter->__offset;
- else
- miter->addr = kmap(miter->page) + miter->__offset;
-
- return true;
-}
-EXPORT_SYMBOL_GPL(backport_sg_miter_next);
-
-/**
- * sg_miter_stop - stop mapping iteration
- * @miter: sg mapping iter to be stopped
- *
- * Description:
- * Stops mapping iterator @miter. @miter should have been started
- * using sg_miter_start(). A stopped iteration can be resumed by
- * calling sg_miter_next() on it. This is useful when resources (kmap)
- * need to be released during iteration.
- *
- * Context:
- * Preemption disabled if the SG_MITER_ATOMIC is set. Don't care
- * otherwise.
- */
-void backport_sg_miter_stop(struct sg_mapping_iter *miter)
-{
- WARN_ON(miter->consumed > miter->length);
-
- /* drop resources from the last iteration */
- if (miter->addr) {
- miter->__offset += miter->consumed;
- miter->__remaining -= miter->consumed;
-
- if ((miter->__flags & SG_MITER_TO_SG) &&
- !PageSlab(miter->page))
- flush_kernel_dcache_page(miter->page);
-
- if (miter->__flags & SG_MITER_ATOMIC) {
- WARN_ON_ONCE(preemptible());
- kunmap_atomic(miter->addr);
- } else
- kunmap(miter->page);
-
- miter->page = NULL;
- miter->addr = NULL;
- miter->length = 0;
- miter->consumed = 0;
- }
-}
-EXPORT_SYMBOL_GPL(backport_sg_miter_stop);
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