/* Support for hardware buffer manager. * * Copyright (C) 2016 Marvell * * Gregory CLEMENT * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include #include #include #include void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) { if (likely(bm_pool->frag_size <= PAGE_SIZE)) skb_free_frag(buf); else kfree(buf); } EXPORT_SYMBOL_GPL(hwbm_buf_free); /* Refill processing for HW buffer management */ int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) { int frag_size = bm_pool->frag_size; void *buf; if (likely(frag_size <= PAGE_SIZE)) buf = netdev_alloc_frag(frag_size); else buf = kmalloc(frag_size, gfp); if (!buf) return -ENOMEM; if (bm_pool->construct) if (bm_pool->construct(bm_pool, buf)) { hwbm_buf_free(bm_pool, buf); return -ENOMEM; } return 0; } EXPORT_SYMBOL_GPL(hwbm_pool_refill); int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num, gfp_t gfp) { int err, i; unsigned long flags; spin_lock_irqsave(&bm_pool->lock, flags); if (bm_pool->buf_num == bm_pool->size) { pr_warn("pool already filled\n"); spin_unlock_irqrestore(&bm_pool->lock, flags); return bm_pool->buf_num; } if (buf_num + bm_pool->buf_num > bm_pool->size) { pr_warn("cannot allocate %d buffers for pool\n", buf_num); spin_unlock_irqrestore(&bm_pool->lock, flags); return 0; } if ((buf_num + bm_pool->buf_num) < bm_pool->buf_num) { pr_warn("Adding %d buffers to the %d current buffers will overflow\n", buf_num, bm_pool->buf_num); spin_unlock_irqrestore(&bm_pool->lock, flags); return 0; } for (i = 0; i < buf_num; i++) { err = hwbm_pool_refill(bm_pool, gfp); if (err < 0) break; } /* Update BM driver with number of buffers added to pool */ bm_pool->buf_num += i; pr_debug("hwpm pool: %d of %d buffers added\n", i, buf_num); spin_unlock_irqrestore(&bm_pool->lock, flags); return i; } EXPORT_SYMBOL_GPL(hwbm_pool_add); ux/net-next.git/log/net/ceph/crush/crush.c'>
path: root/net/ceph/crush/crush.c
diff options
context:
space:
mode:
authorRaju Lakkaraju <Raju.Lakkaraju@microsemi.com>2017-02-07 19:10:26 +0530
committerDavid S. Miller <davem@davemloft.net>2017-02-08 13:29:04 -0500
commit04d8a0a5f3b6887543850d991a5e37c4ec90e250 (patch)
treeee1fafb2122c2b29c7cb19e571bd7229afdbf847 /net/ceph/crush/crush.c
parentff4cf0e5ce952488074aa7f47734af1794f55fbc (diff)
net: phy: Add LED mode driver for Microsemi PHYs.
LED Mode: Microsemi PHY support 2 LEDs (LED[0] and LED[1]) to display different status information that can be selected by setting LED mode. LED Mode parameter (vsc8531, led-0-mode) and (vsc8531, led-1-mode) get from Device Tree. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ceph/crush/crush.c')